diff --git a/source/mycss/syntax/ending.h b/source/mycss/syntax/ending.h
new file mode 100644
index 0000000..0812693
--- /dev/null
+++ b/source/mycss/syntax/ending.h
@@ -0,0 +1,44 @@
+/*
+ Copyright (C) 2016-2017 Alexander Borisov
+ 
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+ 
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+ 
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ 
+ Author: lex.borisov@gmail.com (Alexander Borisov)
+*/
+
+#ifndef MyCSS_SYNTAX_ENDING_H
+#define MyCSS_SYNTAX_ENDING_H
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "mycss/myosi.h"
+#include "mycss/mycss.h"
+#include "mycss/entry.h"
+
+bool mycss_syntax_endings_list_of_rules_return(mycss_entry_t* entry, mycss_token_t* token);
+bool mycss_syntax_endings_list_of_rules_qualified_rule_left_qb(mycss_entry_t* entry, mycss_token_t* token);
+bool mycss_syntax_endings_list_of_rules_at_rule_qb(mycss_entry_t* entry, mycss_token_t* token);
+bool mycss_syntax_endings_component_value_and_simple_block_left_curly_bracket(mycss_entry_t* entry, mycss_token_t* token);
+bool mycss_syntax_endings_component_value_and_simple_block_left_square_bracket(mycss_entry_t* entry, mycss_token_t* token);
+bool mycss_syntax_endings_component_value_and_simple_block_left_parenthesis(mycss_entry_t* entry, mycss_token_t* token);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* MyCSS_SYNTAX_ENDING_H */
diff --git a/source/mycss/syntax/syntax.h b/source/mycss/syntax/syntax.h
new file mode 100644
index 0000000..c04e62e
--- /dev/null
+++ b/source/mycss/syntax/syntax.h
@@ -0,0 +1,40 @@
+/*
+ Copyright (C) 2016-2017 Alexander Borisov
+ 
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+ 
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+ 
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ 
+ Author: lex.borisov@gmail.com (Alexander Borisov)
+*/
+
+#ifndef MyCSS_SYNTAX_H
+#define MyCSS_SYNTAX_H
+#pragma once
+
+#ifdef __cplusplus
+//extern "C" {
+#endif
+    
+#include "mycss/myosi.h"
+#include "mycss/mycss.h"
+#include "mycss/entry.h"
+#include "mycss/syntax_ending.h"
+
+bool mycss_syntax_list_of_rules(mycss_entry_t* entry, mycss_token_t* token, bool last_response);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* MyCSS_SYNTAX_H */
diff --git a/source/mycss/syntax_ending.h b/source/mycss/syntax_ending.h
new file mode 100644
index 0000000..7019d44
--- /dev/null
+++ b/source/mycss/syntax_ending.h
@@ -0,0 +1,39 @@
+/*
+ Copyright (C) 2016-2017 Alexander Borisov
+ 
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+ 
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+ 
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ 
+ Author: lex.borisov@gmail.com (Alexander Borisov)
+ */
+
+#ifndef MyCSS_SYNTAX_ENDING_H
+#define MyCSS_SYNTAX_ENDING_H
+#pragma once
+
+#ifdef __cplusplus
+//extern "C" {
+#endif
+
+#include "mycss/myosi.h"
+#include "mycss/mycss.h"
+#include "mycss/entry.h"
+
+bool mycss_syntax_list_of_rules(mycss_entry_t* entry, mycss_token_t* token, bool last_response);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* MyCSS_SYNTAX_ENDING_H */
diff --git a/source/myport/posix/mycore/utils/mcsync.c b/source/myport/posix/mycore/utils/mcsync.c
index 2e66790..65c5097 100644
--- a/source/myport/posix/mycore/utils/mcsync.c
+++ b/source/myport/posix/mycore/utils/mcsync.c
@@ -47,7 +47,11 @@ static mcsync_status_t mcsync_static_atomic_unlock(void* spinlock)
 /* spinlock */
 void * mcsync_spin_create(void)
 {
+#ifndef MyCORE_MCSYNC_SPINLOCK_PRESENT
+    return mcsync_mutex_create();
+#else
     return mycore_calloc(1, sizeof(int));
+#endif
 }
 
 mcsync_status_t mcsync_spin_init(void* spinlock)