Index: tool.h
===================================================================
--- tool.h	(revision 26057)
+++ tool.h	(revision 26058)
@@ -70,6 +70,7 @@
 
 typedef struct pcb_tool_s {
 	const char *name;             /* textual name of the tool */
+	const char *help;             /* help/tooltip that explains the feature */
 	const char *cookie;           /* plugin cookie _pointer_ of the registrar (comparision is pointer based, not strcmp) */
 	unsigned int priority;        /* lower values are higher priorities; escaping mode will try to select the highest prio tool */
 	const char **icon;            /* XPM for the tool buttons */