diff --git a/fluid/widget_panel.fl.bak b/fluid/widget_panel.fl.bak
deleted file mode 100644
index c016a073a..000000000
--- a/fluid/widget_panel.fl.bak
+++ /dev/null
@@ -1,1167 +0,0 @@
-# data file for the Fltk User Interface Designer (fluid)
-version 1.0400
-header_name {.h}
-code_name {.cxx}
-comment {//
-// Widget panel for the Fast Light Tool Kit (FLTK).
-//
-// Copyright 1998-2021 by Bill Spitzak and others.
-//
-// This library is free software. Distribution and use rights are outlined in
-// the file "COPYING" which should have been included with this file.  If this
-// file is missing or damaged, see the license at:
-//
-//     https://www.fltk.org/COPYING.php
-//
-// Please see the following page on how to report bugs and issues:
-//
-//     https://www.fltk.org/bugs.php
-//
-} {in_source in_header
-}
-
-decl {\#include "Fl_Widget_Type.h"} {private global
-}
-
-decl {\#include <FL/Fl_Grid.H>} {private global
-}
-
-decl {\#include "custom_widgets.h"} {public global
-}
-
-Function {make_window()} {open
-} {
-  Fl_Window {} {open
-    xywh {459 635 480 320} type Double visible
-  } {
-    Fl_Grid {} {open
-      xywh {25 25 336 228} box DOWN_BOX
-      dimensions {3 3} margin {4 4 4 4} gap {4 4}
-      rowheights { 0 32 0 }
-    } {
-      Fl_Button {} {
-        label Button
-        xywh {31 31 77 62}
-        parent_properties {
-          location {0 0}
-        }
-      }
-      Fl_Button {} {
-        label Button selected
-        xywh {140 124 100 20}
-        parent_properties {
-          location {1 1}
-          align 0
-          minsize {100 20}
-        }
-      }
-      Fl_Button {} {
-        label Button
-        xywh {273 176 82 71}
-        parent_properties {
-          location {2 2}
-          minsize {25 28}
-        }
-      }
-      Fl_Button {} {
-        label Button
-        xywh {112 31 243 62}
-        parent_properties {
-          location {0 1}
-          colspan 2
-          minsize {25 20}
-        }
-      }
-    }
-  }
-}
-
-Function {make_widget_panel()} {
-  comment {Create a panel that can be used with all known widgets} open
-} {
-  Fl_Window {} {
-    comment {Use a Double Window to avoid flickering.} open
-    xywh {566 244 420 400} type Double labelsize 11 align 80 resizable hotspot
-    code0 {o->size_range(o->w(), o->h());} size_range {420 400 0 0} visible
-  } {
-    Fl_Tabs widget_tabs {
-      callback {propagate_load((Fl_Group *)o,v);}
-      xywh {10 10 400 350} selection_color 12 labelsize 11 labelcolor 7 when 0 hide resizable
-      code0 {o->show();}
-    } {
-      Fl_Group {} {
-        label GUI
-        callback propagate_load open
-        xywh {10 30 400 330} labelsize 11 when 0 resizable
-      } {
-        Fl_Group {} {
-          label {Label:}
-          callback propagate_load open
-          xywh {95 40 309 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input {} {
-            callback label_cb
-            tooltip {The label text for the widget.
-Use Ctrl-J for newlines.} xywh {95 40 190 20} labelfont 1 labelsize 11 when 15 textsize 11 resizable
-          }
-          Fl_Choice {} {
-            callback labeltype_cb open
-            tooltip {The label style for the widget.} xywh {285 40 119 20} box THIN_UP_BOX down_box BORDER_BOX labelfont 1 labelsize 11 textsize 11
-            code0 {extern Fl_Menu_Item labeltypemenu[];}
-            code1 {o->menu(labeltypemenu);}
-          } {}
-        }
-        Fl_Group {} {
-          label {Image:}
-          callback propagate_load open
-          xywh {95 65 309 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input {} {
-            callback image_cb
-            tooltip {The active image for the widget.} xywh {95 65 200 20} labelfont 1 labelsize 11 textsize 11 resizable
-          }
-          Fl_Button {} {
-            label {Browse...}
-            callback image_browse_cb
-            tooltip {Click to choose the active image.} xywh {295 65 69 20} labelsize 11
-          }
-          Fl_Button {} {
-            callback compress_image_cb
-            tooltip {store image uncompressed as RGBA data
-or compressed in the original file format} xywh {364 65 20 20} type Toggle
-            code0 {o->image(compressed_pixmap);}
-            code3 {\#include "pixmaps.h"}
-          }
-          Fl_Button {} {
-            callback bind_image_cb
-            tooltip {bind the image to the widget, so it will be deleted automatically} xywh {384 65 20 20} type Toggle
-            code0 {o->image(bind_pixmap);}
-            code3 {\#include "pixmaps.h"}
-          }
-        }
-        Fl_Group {} {
-          label {Inactive:}
-          callback propagate_load open
-          xywh {95 90 309 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input {} {
-            callback inactive_cb
-            tooltip {The inactive image for the widget.} xywh {95 90 200 20} labelfont 1 labelsize 11 textsize 11 resizable
-          }
-          Fl_Button {} {
-            label {Browse...}
-            callback inactive_browse_cb
-            tooltip {Click to choose the inactive image.} xywh {295 90 69 20} labelsize 11
-          }
-          Fl_Button {} {
-            callback compress_deimage_cb
-            tooltip {store image uncompressed as RGBA data
-or compressed in the original file format} xywh {364 90 20 20} type Toggle
-            code0 {o->image(compressed_pixmap);}
-            code3 {\#include "pixmaps.h"}
-          }
-          Fl_Button {} {
-            callback bind_deimage_cb
-            tooltip {bind the image to the widget, so it will be deleted automatically} xywh {384 90 20 20} type Toggle
-            code0 {o->image(bind_pixmap);}
-            code3 {\#include "pixmaps.h"}
-          }
-        }
-        Fl_Group {} {
-          label {Alignment:}
-          callback propagate_load
-          xywh {95 115 310 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Button {} {
-            label Clip
-            user_data {(fl_intptr_t)FL_ALIGN_CLIP}
-            callback align_cb
-            tooltip {Clip the label to the inside of the widget.} xywh {95 115 30 20} type Toggle selection_color 8 labelsize 11 align 16
-          }
-          Fl_Button {} {
-            label Wrap
-            user_data {(fl_intptr_t)FL_ALIGN_WRAP}
-            callback align_cb
-            tooltip {Wrap the label text.} xywh {130 115 38 20} type Toggle selection_color 8 labelsize 11
-          }
-          Fl_Button {} {
-            label {@-1<-}
-            user_data {(fl_intptr_t)FL_ALIGN_LEFT}
-            callback align_cb
-            tooltip {Left-align the label.} xywh {278 115 20 20} type Toggle selection_color 8 labelsize 11 labelcolor 8 hide
-          }
-          Fl_Button {} {
-            label {@-1->}
-            user_data {(fl_intptr_t)FL_ALIGN_RIGHT}
-            callback align_cb
-            tooltip {Right-align the label.} xywh {303 115 20 20} type Toggle selection_color 8 labelsize 11 labelcolor 8 hide
-          }
-          Fl_Button {} {
-            label {@-18}
-            user_data {(fl_intptr_t)FL_ALIGN_TOP}
-            callback align_cb
-            tooltip {Top-align the label.} xywh {328 115 20 20} type Toggle selection_color 8 labelsize 11 labelcolor 8 hide
-          }
-          Fl_Button {} {
-            label {@-12}
-            user_data {(fl_intptr_t)FL_ALIGN_BOTTOM}
-            callback align_cb
-            tooltip {Bottom-align the label.} xywh {353 115 20 20} type Toggle selection_color 8 labelsize 11 labelcolor 8 hide
-          }
-          Fl_Choice {} {
-            callback align_text_image_cb open
-            xywh {172 115 110 20} down_box BORDER_BOX labelsize 11 textsize 11
-          } {
-            MenuItem {} {
-              label {   Image Alignment   }
-              user_data {(fl_intptr_t)0xFFFFFFFF}
-              xywh {145 145 100 20} labelfont 2 labelsize 11 deactivate
-            }
-            MenuItem {} {
-              label {image over text}
-              user_data {(fl_intptr_t)FL_ALIGN_IMAGE_OVER_TEXT}
-              xywh {25 25 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label {text over image}
-              user_data {(fl_intptr_t)FL_ALIGN_TEXT_OVER_IMAGE}
-              xywh {15 15 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label {text next to image}
-              user_data {(fl_intptr_t)FL_ALIGN_TEXT_NEXT_TO_IMAGE}
-              xywh {35 35 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label {image next to text}
-              user_data {(fl_intptr_t)FL_ALIGN_IMAGE_NEXT_TO_TEXT}
-              xywh {45 45 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label {image is backdrop}
-              user_data {(fl_intptr_t)FL_ALIGN_IMAGE_BACKDROP}
-              xywh {55 55 100 20} labelsize 11
-            }
-          }
-          Fl_Choice {} {
-            callback align_position_cb open
-            xywh {288 115 85 20} down_box BORDER_BOX labelsize 11 textsize 11
-          } {
-            MenuItem {} {
-              label {   Inside && Outside   }
-              user_data {(fl_intptr_t)0xFFFFFFFF}
-              xywh {135 135 100 20} labelfont 2 labelsize 11 deactivate
-            }
-            MenuItem {} {
-              label {top left}
-              user_data {(fl_intptr_t)FL_ALIGN_TOP_LEFT}
-              xywh {45 45 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label top
-              user_data {(fl_intptr_t)FL_ALIGN_TOP}
-              xywh {55 55 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label {top right}
-              user_data {(fl_intptr_t)FL_ALIGN_TOP_RIGHT}
-              xywh {65 65 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label left
-              user_data {(fl_intptr_t)FL_ALIGN_LEFT}
-              xywh {75 75 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label center
-              user_data {(fl_intptr_t)FL_ALIGN_CENTER}
-              xywh {35 35 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label right
-              user_data {(fl_intptr_t)FL_ALIGN_RIGHT}
-              xywh {85 85 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label {bottom left}
-              user_data {(fl_intptr_t)FL_ALIGN_BOTTOM_LEFT}
-              xywh {95 95 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label bottom
-              user_data {(fl_intptr_t)FL_ALIGN_BOTTOM}
-              xywh {105 105 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label {bottom right}
-              user_data {(fl_intptr_t)FL_ALIGN_BOTTOM_RIGHT}
-              xywh {115 115 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label {   Outside Alignment   }
-              user_data {(fl_intptr_t)0xFFFFFFFF}
-              xywh {125 125 100 20} labelfont 2 labelsize 11 deactivate
-            }
-            MenuItem {} {
-              label {left top}
-              user_data {(fl_intptr_t)FL_ALIGN_LEFT_TOP}
-              xywh {135 135 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label {right top}
-              user_data {(fl_intptr_t)FL_ALIGN_RIGHT_TOP}
-              xywh {145 145 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label {left bottom}
-              user_data {(fl_intptr_t)FL_ALIGN_LEFT_BOTTOM}
-              xywh {155 155 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label {right bottom}
-              user_data {(fl_intptr_t)FL_ALIGN_RIGHT_BOTTOM}
-              xywh {45 45 100 20} labelsize 11
-            }
-          }
-          Fl_Button {} {
-            label {@-3square}
-            user_data {(fl_intptr_t)FL_ALIGN_INSIDE}
-            callback align_cb
-            tooltip {Show the label inside the widget.} xywh {378 115 20 20} type Toggle selection_color 8 labelsize 11 labelcolor 8
-          }
-          Fl_Box {} {
-            xywh {404 115 0 20} labelsize 11 resizable
-          }
-        }
-        Fl_Group {} {
-          label {Position:}
-          callback position_group_cb
-          xywh {95 150 314 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input widget_x_input {
-            label {X:}
-            callback x_cb
-            tooltip {The X position of the widget as a number or formula.
-Formulas can be simple math, including the variables
-x, px, sx, cx, and i} xywh {95 150 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Input widget_y_input {
-            label {Y:}
-            callback y_cb
-            tooltip {The Y position of the widget as a number or formula.
-Formulas can be simple math, including the variables
-y, py, sy, cy, and i} xywh {155 150 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Input widget_w_input {
-            label {Width:}
-            callback w_cb
-            tooltip {The width of the widget as a number or formula.
-Formulas can be simple math, including the variables
-w, pw, sw, cw, and i} xywh {215 150 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Input widget_h_input {
-            label {Height:}
-            callback h_cb
-            tooltip {The height of the widget as a number or formula.
-Formulas can be simple math, including the variables
-h, ph, sh, ch, and i} xywh {275 150 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Choice {} {
-            label {Children:}
-            callback wc_relative_cb open
-            tooltip {When instantiating a widget class, the children can either be fixed in their original position, automatically be repositioned, or both repsositioned and resized to fit the container.} xywh {335 150 64 20} down_box BORDER_BOX labelsize 11 align 5 textsize 11
-          } {
-            MenuItem {} {
-              label Fixed
-              xywh {0 0 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label Reposition
-              xywh {0 0 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label Resize
-              xywh {0 0 31 20} labelsize 11
-            }
-          }
-          Fl_Box {} {
-            xywh {399 150 1 20} hide resizable
-          }
-        }
-        Fl_Group {} {
-          label {Flex Parent:}
-          callback flex_size_group_cb
-          comment {This group is only visible if the parent is an Fl_Flex widget}
-          xywh {95 150 314 20} labelfont 1 labelsize 11 align 4 hide
-        } {
-          Fl_Value_Input widget_flex_size {
-            label {Size:}
-            callback flex_size_cb
-            tooltip {Fixed Width or Height for a horizontal or vertical Fl_Flex Parent.} xywh {95 150 55 20} labelsize 11 align 5 textsize 11
-          }
-          Fl_Check_Button widget_flex_fixed {
-            label fixed
-            callback flex_fixed_cb
-            tooltip {If checked, the size of the widget stays fixed.} xywh {155 150 55 20} down_box DOWN_BOX labelsize 11
-          }
-          Fl_Box {} {
-            xywh {398 150 1 20} resizable
-          }
-        }
-        Fl_Group {} {
-          label {Values:}
-          callback values_group_cb open
-          xywh {95 185 300 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Value_Input {} {
-            label {Size:}
-            callback slider_size_cb
-            tooltip {The size of the slider.} xywh {95 185 55 20} labelsize 11 align 5 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {Minimum:}
-            callback min_cb
-            tooltip {The minimum value of the widget.} xywh {155 185 55 20} labelsize 11 align 5 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {Maximum:}
-            callback max_cb
-            tooltip {The maximum value of the widget.} xywh {215 185 55 20} labelsize 11 align 5 value 1 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {Step:}
-            callback step_cb
-            tooltip {The resolution of the widget value.} xywh {275 185 55 20} labelsize 11 align 5 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {Value:}
-            callback value_cb
-            tooltip {The current widget value.} xywh {335 185 55 20} labelsize 11 align 5 textsize 11
-          }
-          Fl_Box {} {
-            xywh {395 185 0 20} resizable
-          }
-        }
-        Fl_Group {} {
-          label {Margins:}
-          callback flex_margin_group_cb
-          comment {This group is only visible for Fl_Flex widgets}
-          xywh {95 185 300 20} labelfont 1 labelsize 11 align 4 hide
-        } {
-          Fl_Value_Input {} {
-            label {Left:}
-            callback flex_margin_left_cb
-            tooltip {Left margin in group.} xywh {95 185 55 20} labelsize 11 align 5 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {Top:}
-            callback flex_margin_top_cb
-            tooltip {Top margin in group.} xywh {155 185 55 20} labelsize 11 align 5 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {Right:}
-            callback flex_margin_right_cb
-            tooltip {Right margin in group.} xywh {215 185 55 20} labelsize 11 align 5 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {Bottom:}
-            callback flex_margin_bottom_cb
-            tooltip {Bottom margin in group.} xywh {275 185 55 20} labelsize 11 align 5 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {Gap:}
-            callback flex_margin_gap_cb
-            tooltip {Gap between children.} xywh {335 185 55 20} labelsize 11 align 5 textsize 11
-          }
-          Fl_Box {} {
-            xywh {395 185 0 20} resizable
-          }
-        }
-        Fl_Group {} {
-          label {Grid Margins:
-
-
-Layout:}
-          callback grid_margin_group_cb
-          comment {This group is only visible for Fl_Grid widgets} open
-          xywh {95 185 300 55} labelfont 1 labelsize 11 align 4 hide
-        } {
-          Fl_Value_Input {} {
-            label {Left:}
-            callback grid_margin_left_cb
-            tooltip {Left margin in group.} xywh {95 185 45 20} labelsize 11 align 5 maximum 1000 step 1 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {Top:}
-            callback grid_margin_top_cb
-            tooltip {Top margin in group.} xywh {144 185 45 20} labelsize 11 align 5 maximum 1000 step 1 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {Right:}
-            callback grid_margin_right_cb
-            tooltip {Right margin in group.} xywh {193 185 45 20} labelsize 11 align 5 maximum 1000 step 1 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {Bottom:}
-            callback grid_margin_bottom_cb
-            tooltip {Bottom margin in group.} xywh {242 185 45 20} labelsize 11 align 5 maximum 1000 step 1 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {RowGap:}
-            callback grid_row_gap_cb
-            tooltip {Gap between children.} xywh {291 185 45 20} labelsize 11 align 5 maximum 1000 step 1 textsize 11
-          }
-          Fl_Value_Input {} {
-            label {ColGap:}
-            callback grid_col_gap_cb
-            tooltip {Gap between children.} xywh {340 185 45 20} labelsize 11 align 5 maximum 1000 step 1 textsize 11
-          }
-          Fl_Box {} {
-            xywh {395 185 0 20} resizable
-          }
-          Fl_Input {} {
-            label {Rows:}
-            callback grid_rows_cb
-            tooltip {Number of horizontal rows in the Grid group} xywh {95 220 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Input {} {
-            label {Columns:}
-            callback grid_cols_cb
-            tooltip {Number of vertical columns in the Grid group} xywh {154 220 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-        }
-        Fl_Group {} {
-          label {Size Range:}
-          callback size_range_group_cb open
-          xywh {95 185 300 20} labelfont 1 labelsize 11 align 4 hide
-        } {
-          Fl_Value_Input {} {
-            label {Minimum Size:}
-            callback min_w_cb
-            tooltip {The size of the slider.} xywh {95 185 55 20} labelsize 11 align 5 maximum 2048 step 1 textsize 11
-          }
-          Fl_Value_Input {} {
-            callback min_h_cb
-            tooltip {The minimum value of the widget.} xywh {155 185 55 20} labelsize 11 align 5 maximum 2048 step 1 textsize 11
-          }
-          Fl_Button {} {
-            label set
-            callback set_min_size_cb
-            xywh {215 185 25 20} labelsize 11
-          }
-          Fl_Value_Input {} {
-            label {Maximum Size:}
-            callback max_w_cb
-            tooltip {The maximum value of the widget.} xywh {245 185 55 20} labelsize 11 align 5 maximum 2048 step 1 textsize 11
-          }
-          Fl_Value_Input {} {
-            callback max_h_cb
-            tooltip {The resolution of the widget value.} xywh {305 185 55 20} labelsize 11 align 5 maximum 2048 step 1 textsize 11
-          }
-          Fl_Button {} {
-            label set
-            callback set_max_size_cb
-            xywh {365 185 25 20} labelsize 11
-          }
-          Fl_Box {} {
-            xywh {395 185 0 20} resizable
-          }
-        }
-        Fl_Group {} {
-          label {Shortcut:}
-          callback propagate_load
-          xywh {95 210 310 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Button {} {
-            callback shortcut_in_cb
-            comment {This is a special button that grabs keystrokes directly}
-            tooltip {The shortcut key for the widget.
-Use 'Backspace' key to clear.} xywh {95 210 310 20} box DOWN_BOX color 7 selection_color 12 labelsize 11 when 1
-            code0 {\#include <FL/Fl_Shortcut_Button.H>}
-            class Fl_Shortcut_Button
-          }
-        }
-        Fl_Group {} {
-          label {X Class:}
-          callback propagate_load
-          xywh {95 235 300 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input {} {
-            label {:}
-            callback xclass_cb
-            tooltip {The X resource class.} xywh {95 235 95 20} labelfont 1 labelsize 11 textsize 11 resizable
-          }
-          Fl_Light_Button {} {
-            label Border
-            callback border_cb
-            tooltip {Add a border around the window.} xywh {195 235 60 20} selection_color 1 labelsize 11
-          }
-          Fl_Light_Button {} {
-            label Modal
-            callback modal_cb
-            tooltip {Make the window modal.} xywh {260 235 55 20} selection_color 1 labelsize 11
-          }
-          Fl_Light_Button {} {
-            label Nonmodal
-            callback non_modal_cb
-            tooltip {Make the window non-modal.} xywh {320 235 75 20} selection_color 1 labelsize 11 align 148
-          }
-        }
-        Fl_Group {} {
-          label {Attributes:}
-          callback propagate_load
-          xywh {95 260 305 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Light_Button {} {
-            label Visible
-            callback visible_cb
-            tooltip {Show the widget.} xywh {95 260 60 20} selection_color 1 labelsize 11
-          }
-          Fl_Light_Button {} {
-            label Active
-            callback active_cb
-            tooltip {Activate the widget.} xywh {160 260 60 20} selection_color 1 labelsize 11
-          }
-          Fl_Light_Button {} {
-            label Resizable
-            callback resizable_cb
-            tooltip {Make the widget resizable.} xywh {225 260 75 20} selection_color 1 labelsize 11 when 1
-          }
-          Fl_Light_Button {} {
-            label Hotspot
-            callback hotspot_cb
-            tooltip {Center the window under this widget.} xywh {305 260 70 20} selection_color 1 labelsize 11 when 1
-          }
-          Fl_Box {} {
-            xywh {395 260 0 20} labelsize 11 resizable
-          }
-        }
-        Fl_Input {} {
-          label {Tooltip:}
-          callback tooltip_cb
-          tooltip {The tooltip text for the widget.
-Use Ctrl-J for newlines.} xywh {95 285 310 20} labelfont 1 labelsize 11 textsize 11
-        }
-        Fl_Box {} {
-          xywh {95 305 300 5} hide resizable
-        }
-      }
-      Fl_Group {} {
-        label Style
-        callback propagate_load open
-        xywh {10 30 400 330} labelsize 11 when 0 hide
-      } {
-        Fl_Group {} {
-          label {Label Font:}
-          callback propagate_load open
-          xywh {95 40 309 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Choice {} {
-            callback labelfont_cb open
-            tooltip {The style of the label text.} xywh {95 40 152 20} box THIN_UP_BOX down_box BORDER_BOX labelfont 1 labelsize 11 textsize 11 resizable
-            code0 {extern Fl_Menu_Item fontmenu[];}
-            code1 {o->menu(fontmenu);}
-          } {}
-          Fl_Value_Input {} {
-            callback labelsize_cb
-            tooltip {The size of the label text.} xywh {247 40 49 20} labelsize 11 maximum 100 step 1 value 14 textsize 11
-          }
-          Fl_Button w_labelcolor {
-            label {Label Color}
-            callback labelcolor_cb
-            tooltip {The color of the label text.} xywh {296 40 90 20} labelsize 11
-          }
-          Fl_Menu_Button {} {
-            callback labelcolor_menu_cb open
-            xywh {386 40 18 20}
-            code0 {extern Fl_Menu_Item colormenu[];}
-            code1 {o->menu(colormenu);}
-          } {}
-        }
-        Fl_Group {} {
-          label {Box:}
-          callback propagate_load open
-          xywh {95 65 309 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Choice {} {
-            callback box_cb open
-            tooltip {The "up" box of the widget.} xywh {95 65 201 20} box THIN_UP_BOX down_box BORDER_BOX labelfont 1 labelsize 11 textsize 11 resizable
-            code0 {extern Fl_Menu_Item boxmenu[];}
-            code1 {o->menu(boxmenu);}
-          } {}
-          Fl_Button w_color {
-            label Color
-            callback color_cb
-            tooltip {The background color of the widget.} xywh {296 65 90 20} labelsize 11
-          }
-          Fl_Menu_Button {} {
-            callback color_menu_cb open
-            xywh {386 65 18 20}
-            code0 {extern Fl_Menu_Item colormenu[];}
-            code1 {o->menu(colormenu);}
-          } {}
-        }
-        Fl_Group {} {
-          label {Down Box:}
-          callback propagate_load open
-          xywh {95 90 309 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Choice {} {
-            callback down_box_cb open
-            tooltip {The "down" box of the widget.} xywh {95 90 201 20} box THIN_UP_BOX down_box BORDER_BOX labelfont 1 labelsize 11 labelcolor 45 textsize 11 resizable
-            code0 {extern Fl_Menu_Item boxmenu[];}
-            code1 {o->menu(boxmenu);}
-          } {}
-          Fl_Button w_selectcolor {
-            label {Select Color}
-            callback color2_cb
-            tooltip {The selection color of the widget.} xywh {296 90 90 20} labelsize 11
-          }
-          Fl_Menu_Button {} {
-            callback color2_menu_cb open
-            xywh {386 90 18 20}
-            code0 {extern Fl_Menu_Item colormenu[];}
-            code1 {o->menu(colormenu);}
-          } {}
-        }
-        Fl_Group {} {
-          label {Text Font:}
-          callback propagate_load open
-          xywh {95 115 309 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Choice {} {
-            callback textfont_cb open
-            tooltip {The value text style.} xywh {95 115 152 20} box DOWN_BOX down_box BORDER_BOX labelfont 1 labelsize 11 textsize 11 resizable
-            code0 {extern Fl_Menu_Item fontmenu[];}
-            code1 {o->menu(fontmenu);}
-          } {}
-          Fl_Value_Input {} {
-            callback textsize_cb
-            tooltip {The value text size.} xywh {247 115 49 20} labelsize 11 maximum 100 step 1 value 14 textsize 11
-          }
-          Fl_Button w_textcolor {
-            label {Text Color}
-            callback textcolor_cb
-            tooltip {The value text color.} xywh {296 115 90 20} labelsize 11
-          }
-          Fl_Menu_Button {} {
-            callback textcolor_menu_cb open
-            xywh {386 115 18 20}
-            code0 {extern Fl_Menu_Item colormenu[];}
-            code1 {o->menu(colormenu);}
-          } {}
-        }
-        Fl_Box {} {
-          xywh {95 165 300 40} labelsize 11 resizable
-        }
-        Fl_Light_Button {} {
-          label Compact
-          callback compact_cb
-          tooltip {use compact box types for closely set buttons} xywh {95 140 90 20} selection_color 1 labelsize 11
-        }
-      }
-      Fl_Group {} {
-        label {C++}
-        callback propagate_load open
-        xywh {10 30 400 330} labelsize 11 when 0 hide
-      } {
-        Fl_Group {} {
-          label {Class:}
-          callback propagate_load open
-          xywh {95 40 310 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input {} {
-            user_data 4
-            callback subclass_cb
-            tooltip {The widget subclass.} xywh {95 40 172 20} labelfont 1 labelsize 11 textfont 4 textsize 11 resizable
-          }
-          Fl_Choice {} {
-            callback subtype_cb open
-            tooltip {The widget subtype.} xywh {267 40 138 20} box THIN_UP_BOX down_box BORDER_BOX labelsize 11 textsize 11
-          } {}
-        }
-        Fl_Group {} {
-          label {Name:}
-          callback propagate_load open
-          xywh {95 65 310 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input {} {
-            callback name_cb
-            tooltip {The name of the widget.} xywh {95 65 235 20} labelfont 1 labelsize 11 textsize 11 resizable
-          }
-          Fl_Choice {} {
-            callback name_public_member_cb open
-            tooltip {Change member access attribute.} xywh {330 65 75 20} down_box BORDER_BOX labelsize 11 when 1 textsize 11
-          } {
-            MenuItem {} {
-              label private
-              user_data 0 user_data_type long
-              xywh {0 0 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label public
-              user_data 1 user_data_type long
-              xywh {0 0 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label protected
-              user_data 2 user_data_type long
-              xywh {0 0 100 20} labelsize 11
-            }
-          }
-          Fl_Choice {} {
-            callback name_public_cb open
-            tooltip {Change widget accessibility.} xywh {330 65 75 20} down_box BORDER_BOX labelsize 11 when 1 textsize 11 hide
-          } {
-            MenuItem {} {
-              label local
-              user_data 0 user_data_type long
-              xywh {10 10 100 20} labelsize 11
-            }
-            MenuItem {} {
-              label global
-              user_data 1 user_data_type long
-              xywh {10 10 100 20} labelsize 11
-            }
-          }
-        }
-        Fl_Input {v_input[0]} {
-          label {Extra Code:}
-          user_data 0
-          callback v_input_cb
-          tooltip {Extra initialization code for the widget.} xywh {95 90 310 20} labelfont 1 labelsize 11 textfont 4 textsize 11
-        }
-        Fl_Input {v_input[1]} {
-          user_data 1
-          callback v_input_cb
-          tooltip {Extra initialization code for the widget.} xywh {95 110 310 20} labelsize 11 textfont 4 textsize 11
-        }
-        Fl_Input {v_input[2]} {
-          user_data 2
-          callback v_input_cb
-          tooltip {Extra initialization code for the widget.} xywh {95 130 310 20} labelsize 11 textfont 4 textsize 11
-        }
-        Fl_Input {v_input[3]} {
-          user_data 3
-          callback v_input_cb
-          tooltip {Extra initialization code for the widget.} xywh {95 150 310 20} labelsize 11 textfont 4 textsize 11
-        }
-        Fl_Tile {} {
-          callback {wComment->do_callback(wComment, v);
-wCallback->do_callback(wCallback, v);} open
-          xywh {95 175 310 130} resizable
-        } {
-          Fl_Group {} {open
-            xywh {95 175 310 48} box FLAT_BOX
-          } {
-            Fl_Text_Editor wComment {
-              label {Comment:}
-              tooltip {Write a comment that will appear in the source code and in the widget tree overview.} xywh {95 175 310 45} box DOWN_BOX labelfont 1 labelsize 11 align 4 when 1 textfont 6 textsize 11 textcolor 59 resizable
-              code0 {wComment->buffer(new Fl_Text_Buffer());}
-              code1 {wComment->callback((Fl_Callback*)comment_cb);}
-            }
-          }
-          Fl_Group {} {open
-            xywh {95 223 310 82} box FLAT_BOX
-          } {
-            Fl_Text_Editor wCallback {
-              label {Callback:}
-              callback callback_cb
-              tooltip {The callback function or code for the widget. Use the variable name 'o' to access the Widget pointer and 'v' to access the user value.} xywh {95 225 310 80} box DOWN_BOX labelfont 1 labelsize 11 align 4 textfont 4 textsize 11 resizable
-              code0 {\#include "CodeEditor.h"}
-              class CodeEditor
-            }
-          }
-        }
-        Fl_Group {} {
-          label {User Data:}
-          callback propagate_load open
-          xywh {95 310 310 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input {} {
-            callback user_data_cb
-            tooltip {The user data to pass into the callback code.} xywh {95 310 158 20} labelfont 1 labelsize 11 textfont 4 textsize 11 resizable
-          }
-          Fl_Menu_Button {} {
-            label When
-            callback when_cb open
-            tooltip {When to call the callback function.} xywh {260 310 145 20} box THIN_UP_BOX down_box BORDER_BOX labelfont 1 labelsize 11 when 1 textsize 11
-            code0 {extern Fl_Menu_Item whenmenu[];}
-            code1 {o->menu(whenmenu);}
-          } {}
-        }
-        Fl_Group {} {
-          label {Type:}
-          callback propagate_load open
-          xywh {95 332 310 26} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input_Choice {} {
-            callback user_data_type_cb open
-            tooltip {The type of the user data.} xywh {95 335 158 20} labelfont 1 labelsize 11 textfont 4 textsize 11 resizable
-          } {
-            MenuItem {} {
-              label {void*}
-              xywh {0 0 31 20} labelfont 4 labelsize 11
-            }
-            MenuItem {} {
-              label long
-              xywh {0 0 31 20} labelfont 4 labelsize 11
-            }
-          }
-          Fl_Box w_when_box {
-            label FL_WHEN_NEVER
-            xywh {260 332 145 26} box FLAT_BOX selection_color 1 labelsize 8 align 209
-          }
-        }
-      }
-    }
-    Fl_Tabs widget_tabs_repo {open
-      xywh {10 10 400 350}
-      code0 {o->hide();}
-    } {
-      Fl_Group {} {open
-        xywh {10 30 400 330} hide resizable
-      } {}
-      Fl_Group widget_tab_grid {
-        label Grid
-        callback propagate_load open
-        xywh {10 30 400 330} labelsize 11
-      } {
-        Fl_Box {} {
-          label {The Fl_Grid implementation in FLUID is still experimental!}
-          xywh {25 43 370 28} labelfont 1 labelsize 11 labelcolor 1
-        }
-        Fl_Group {} {
-          label {Location:}
-          callback propagate_load open
-          xywh {96 110 314 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input {} {
-            label {Row:}
-            callback grid_set_row_cb
-            xywh {96 110 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Input {} {
-            label {Column:}
-            callback grid_set_col_cb
-            xywh {156 110 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Choice {} {
-            label {Align:}
-            callback grid_align_cb open
-            xywh {215 110 185 20} down_box BORDER_BOX labelsize 11 align 5 textsize 11
-          } {
-            MenuItem {} {
-              label GRID_CENTER
-              user_data FL_GRID_CENTER user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label GRID_FILL
-              user_data FL_GRID_FILL user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label GRID_HORIZONTAL
-              user_data FL_GRID_HORIZONTAL user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label GRID_VERTICAL
-              user_data FL_GRID_VERTICAL user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label GRID_LEFT
-              user_data FL_GRID_LEFT user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label GRID_TOP_LEFT
-              user_data FL_GRID_TOP_LEFT user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label GRID_TOP
-              user_data FL_GRID_TOP user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label GRID_TOP_RIGHT
-              user_data FL_GRID_TOP_RIGHT user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label GRID_RIGHT
-              user_data FL_GRID_RIGHT user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label GRID_BOTTOM_LEFT
-              user_data FL_GRID_BOTTOM_LEFT user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label GRID_BOTTOM
-              user_data FL_GRID_BOTTOM user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-            MenuItem {} {
-              label GRID_BOTTOM_RIGHT
-              user_data FL_GRID_BOTTOM_RIGHT user_data_type long
-              xywh {10 10 31 20} labelsize 11
-            }
-          }
-          Fl_Box {} {
-            xywh {400 110 1 20} hide resizable
-          }
-        }
-        Fl_Box {} {
-          label {-- Widget --}
-          xywh {96 74 155 20} labelfont 1 labelsize 12 align 20
-        }
-        Fl_Group {} {
-          label {Cell Span:}
-          callback propagate_load open
-          xywh {96 145 314 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Box {} {
-            xywh {400 145 1 20} hide resizable
-          }
-          Fl_Input {} {
-            label {Row Span:}
-            callback grid_set_rowspan_cb
-            xywh {96 145 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Input {} {
-            label {Col Span:}
-            callback grid_set_colspan_cb
-            xywh {156 145 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-        }
-        Fl_Group {} {
-          label {Size:}
-          callback propagate_load open
-          xywh {96 180 314 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Box {} {
-            xywh {400 180 1 20} hide resizable
-          }
-          Fl_Input {} {
-            label {Min.Width:}
-            callback grid_set_min_wdt_cb
-            xywh {96 180 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Input {} {
-            label {Min.Height:}
-            callback grid_set_min_hgt_cb
-            xywh {156 180 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-        }
-        Fl_Box {} {
-          label {-- Grid --}
-          xywh {96 214 155 20} labelfont 1 labelsize 12 align 20
-        }
-        Fl_Group {} {
-          label {Row:}
-          callback propagate_load open
-          xywh {96 250 314 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input {} {
-            label Index
-            xywh {96 250 55 20} labelsize 11 align 5 textsize 11 deactivate
-            class Fluid_Coord_Input
-          }
-          Fl_Input {} {
-            label {Height:}
-            callback grid_row_height
-            xywh {156 250 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Input {} {
-            label {Weight:}
-            callback grid_row_weight
-            xywh {216 250 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Input {} {
-            label {Gap:}
-            callback grid_row_gap
-            xywh {276 250 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Box {} {
-            xywh {400 250 1 20} hide resizable
-          }
-        }
-        Fl_Group {} {
-          label {Column:}
-          callback propagate_load open
-          xywh {96 285 314 20} labelfont 1 labelsize 11 align 4
-        } {
-          Fl_Input {} {
-            label Index
-            xywh {96 285 55 20} labelsize 11 align 5 textsize 11 deactivate
-            class Fluid_Coord_Input
-          }
-          Fl_Input {} {
-            label {Width:}
-            callback grid_col_width
-            xywh {156 285 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Input {} {
-            label {Weight:}
-            callback grid_col_weight
-            xywh {216 285 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Input {} {
-            label {Gap:}
-            callback grid_col_gap
-            xywh {276 285 55 20} labelsize 11 align 5 textsize 11
-            class Fluid_Coord_Input
-          }
-          Fl_Box {} {
-            xywh {400 285 1 20} hide resizable
-          }
-        }
-      }
-    }
-    Fl_Group {} {
-      xywh {10 370 400 20} labelsize 11
-    } {
-      Fl_Button wLiveMode {
-        label {Live &Resize}
-        callback live_mode_cb
-        tooltip {Create a live duplicate of the selected widgets to test resizing and menu behavior.} xywh {10 370 80 20} type Toggle labelsize 11
-      }
-      Fl_Button overlay_button {
-        label {Hide &Overlays}
-        callback overlay_cb
-        tooltip {Hide the widget overlay box.} xywh {94 370 80 20} labelsize 11
-      }
-      Fl_Box {} {
-        comment {Hidden resizable box}
-        xywh {258 370 72 20} labelsize 11 hide resizable
-      }
-      Fl_Return_Button {} {
-        label Close
-        callback ok_cb
-        xywh {330 370 80 20} labelsize 11
-      }
-    }
-  }
-}