+//Widgets
+const static char* WDG_DOUBLEVALUE = "doublevalue";
+const static char* WDG_BOOLVALUE = "boolvalue";
+const static char* WDG_STRINGVALUE = "stringvalue";
+const static char* WDG_MULTISELECTOR = "multi_selector";
+//Widget containers
+const static char* WDG_INFO = "label";
+const static char* WDG_GROUP = "groupbox";
+const static char* WDG_CHECK_GROUP = "check_groupbox";
+const static char* WDG_TOOLBOX = "toolbox";
+const static char* WDG_TOOLBOX_BOX = "box";
+const static char* WDG_SWITCH = "switch";
+const static char* WDG_SWITCH_CASE = "case";
+const static char* WDG_SHAPE_SELECTOR = "shape_selector";
+const static char* WDG_CHOICE = "choice";
+
+//Specific widgets
+const static char* WDG_POINT_SELECTOR = "point_selector";
+const static char* WDG_POINT2D_DISTANCE = "point2ddistance";
+const static char* WDG_FEATURE_SELECTOR = "feature_selector";
+const static char* WDG_FEATURE_OR_ATTRIBUTE_SELECTOR = "feature_or_attribute_selector";
+const static char* WDG_DOUBLEVALUE_EDITOR = "doublevalue_editor";
+const static char* WDG_FILE_SELECTOR= "file_selector";
+
+
+const static char* WORKBENCH_DOC = "document";
+//Common Widget's or Feature's Properties