Index: global_typedefs.h
===================================================================
--- global_typedefs.h	(revision 4467)
+++ global_typedefs.h	(revision 4468)
@@ -36,7 +36,9 @@
 typedef struct net_st NetType, *NetTypePtr;
 typedef struct layer_st LayerType, *LayerTypePtr;
 typedef struct data_st  DataType, *DataTypePtr;
+typedef struct plug_io_s plug_io_t;
 
+
 typedef unsigned int pcb_cardinal_t;
 typedef unsigned char pcb_uint8_t;   /* Don't use in new code. */