Index: trunk/src/libcschem/project_p4.h
===================================================================
--- trunk/src/libcschem/project_p4.h	(revision 10223)
+++ trunk/src/libcschem/project_p4.h	(revision 10224)
@@ -30,6 +30,8 @@
 #ifndef CSCH_PROJECT_P4_H
 #define CSCH_PROJECT_P4_H
 
+/* Per Plugin Per Project (p4) data */
+
 #include <libcschem/project.h>
 
 typedef long csch_p4id_t; /* used internally for indexing project->p4data */