Index: plug_io.h
===================================================================
--- plug_io.h	(revision 27330)
+++ plug_io.h	(revision 27331)
@@ -87,7 +87,7 @@
 	/* Write the idxth subcircuit from buffer to a file. Return 0 on success. */
 	int (*write_buffer_subc)(pcb_plug_io_t *ctx, FILE *f, pcb_buffer_t *buff, long idx);
 
-	/* Write element data to a file. Return 0 on success. */
+	/* Write subcirciots from 'e' to a library file. Return 0 on success. */
 	int (*write_footprint)(pcb_plug_io_t *ctx, FILE *f, pcb_data_t *e);
 
 	/* Write PCB to f; there's a copy of the file we are going to
@@ -126,7 +126,7 @@
 int pcb_parse_pcb(pcb_board_t *Ptr, const char *Filename, const char *fmt, int load_settings, int ignore_missing);
 int pcb_parse_footprint(pcb_data_t *Ptr, const char *name, const char *fmt);
 int pcb_parse_font(pcb_font_t *Ptr, const char *Filename);
-int pcb_write_buffer(FILE *f, pcb_buffer_t *buff, const char *fmt, pcb_bool elem_only);
+int pcb_write_buffer(FILE *f, pcb_buffer_t *buff, const char *fmt, pcb_bool subc_only);
 int pcb_write_footprint_data(FILE *f, pcb_data_t *e, const char *fmt);
 int pcb_write_font(pcb_font_t *Ptr, const char *Filename, const char *fmt);
 
@@ -144,7 +144,7 @@
 int pcb_save_buffer(const char *Filename, const char *fmt);
 void pcb_print_quoted_string_(FILE *, const char *); /* without wrapping in "" */
 void pcb_print_quoted_string(FILE *, const char *); /* with wrapping in "" */
-int pcb_write_pcb_file(const char *Filename, pcb_bool thePcb, const char *fmt, pcb_bool emergency, pcb_bool elem_only);
+int pcb_write_pcb_file(const char *Filename, pcb_bool thePcb, const char *fmt, pcb_bool emergency, pcb_bool subc_only);
 void pcb_set_design_dir(const char *fn);
 int pcb_load_buffer(pcb_hidlib_t *hidlib, pcb_buffer_t *buff, const char *fn, const char *fmt);