/* ************** wmOperatorType ************************ */
/* flag */
-#define OPTYPE_REGISTER 1
-#define OPTYPE_UNDO 2
+#define OPTYPE_REGISTER 1 /* register operators in stack after finishing */
+#define OPTYPE_UNDO 2 /* do undo push after after */
+#define OPTYPE_BLOCKING 4 /* let blender grab all input from the WM (X11) */
/* context to call operator in for WM_operator_name_call */
/* rna_ui.c contains EnumPropertyItem's of these, keep in sync */