diff --git a/ChangeLog b/ChangeLog
index 032677d89..4429de605 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,23 @@
+2010-06-23  Robert Larice
+ * src/frontend/breakp.c,
+ * src/frontend/com_let.c,
+ * src/frontend/com_measure2.c,
+ * src/frontend/com_sysinfo.c,
+ * src/frontend/cpitf.c,
+ * src/frontend/dotcards.c,
+ * src/frontend/measure.c,
+ * src/frontend/mw_coms.c,
+ * src/frontend/mw_coms.h,
+ * src/frontend/runcoms.c,
+ * src/frontend/runcoms2.c,
+ * src/frontend/where.c,
+ * src/frontend/where.h,
+ * src/include/cpextern.h,
+ * src/include/fteext.h :
+ ansi function definitions and declarations for the com_*() functions.
+ remove some casts to NULL.
+ several com_*() functions don't use their argument, add unused attribute later.
+
 2010-06-22 Holger Vogt
  * b4soild.c: line 7598 double assignment of Cbg1 removed
  * configure.in, /visualc/include/config.h: version 21plus
diff --git a/src/frontend/breakp.c b/src/frontend/breakp.c
index 4dd1e1ee0..a55e4dc67 100644
--- a/src/frontend/breakp.c
+++ b/src/frontend/breakp.c
@@ -186,7 +186,7 @@ com_step(wordlist *wl)
         steps = howmanysteps = atoi(wl->wl_word);
     else
         steps = howmanysteps = 1;
-    com_resume((wordlist *) NULL);
+    com_resume(NULL);
     return;
 }
 
diff --git a/src/frontend/com_let.c b/src/frontend/com_let.c
index 07dbed67b..aa54a4176 100644
--- a/src/frontend/com_let.c
+++ b/src/frontend/com_let.c
@@ -29,7 +29,7 @@ com_let(wordlist *wl)
     fake_wl.wl_next = NULL;
 
     if (!wl) {
-        com_display((wordlist *) NULL);
+        com_display(NULL);
         return;
     }
 
diff --git a/src/frontend/com_measure2.c b/src/frontend/com_measure2.c
index 91327e7aa..b911bc706 100644
--- a/src/frontend/com_measure2.c
+++ b/src/frontend/com_measure2.c
@@ -869,7 +869,7 @@ void measure_ERR3( ) {
    return;
 }
 
-void com_dotmeasure( ) {
+void com_dotmeasure(wordlist *wl) {
 /* simulation info */
 //      printf("*%s\n", plot_cur->pl_title);
 //      printf("\t %s, %s\n", plot_cur->pl_name, plot_cur->pl_date); // missing temp
diff --git a/src/frontend/com_sysinfo.c b/src/frontend/com_sysinfo.c
index 1c4cf7d13..29d200454 100644
--- a/src/frontend/com_sysinfo.c
+++ b/src/frontend/com_sysinfo.c
@@ -83,7 +83,7 @@ static void tesFreeSystemInfo(TesSystemInfo *info) {
 }
 
 /* print system info */
-void com_sysinfo()
+void com_sysinfo(wordlist *wl)
 {
    int errorcode;
    TesSystemInfo* info;
diff --git a/src/frontend/cpitf.c b/src/frontend/cpitf.c
index f93309e7c..67d776580 100644
--- a/src/frontend/cpitf.c
+++ b/src/frontend/cpitf.c
@@ -328,7 +328,7 @@ cp_periodic(void)
 void
 cp_doquit(void)
 {
-    com_quit((wordlist *) NULL);
+    com_quit(NULL);
     return;
 }
 
diff --git a/src/frontend/dotcards.c b/src/frontend/dotcards.c
index 7e3876997..bfacb71b7 100644
--- a/src/frontend/dotcards.c
+++ b/src/frontend/dotcards.c
@@ -385,7 +385,7 @@ ft_cktcoms(bool terse)
         static wordlist ww = { "everything", NULL, NULL } ;
         com_rusage(&ww);
     } else if ((!ft_noacctprint) && (!ft_acctprint))
-        com_rusage((wordlist *) NULL);
+        com_rusage(NULL);
     /* absolutely no accounting if noacct is given */
     
     putc('\n', cp_out);
diff --git a/src/frontend/measure.c b/src/frontend/measure.c
index 749f8a153..34a2d9f90 100644
--- a/src/frontend/measure.c
+++ b/src/frontend/measure.c
@@ -50,7 +50,7 @@ com_meas(wordlist *wl) {
    struct dvec *d;
 
    if (!wl) {
-      com_display((wordlist *) NULL);
+      com_display(NULL);
       return;
    }
    wl_count = wl;
diff --git a/src/frontend/mw_coms.c b/src/frontend/mw_coms.c
index 35ed35841..eb94025ab 100644
--- a/src/frontend/mw_coms.c
+++ b/src/frontend/mw_coms.c
@@ -17,7 +17,7 @@
 /* Clears ckt and removes current circ. form database */
  
 void
-com_removecirc()
+com_removecirc(wordlist *wl)
 {
     struct variable *v, *next;
     struct circ *ct;
diff --git a/src/frontend/mw_coms.h b/src/frontend/mw_coms.h
index 64e667fde..8fb1ebd87 100644
--- a/src/frontend/mw_coms.h
+++ b/src/frontend/mw_coms.h
@@ -6,7 +6,7 @@
 #ifndef MW_COMS_H_INCLUDED
 #define MW_COMS_H_INCLUDED
 
-void com_removecirc(void);
+void com_removecirc(wordlist *wl);
 
 
 #endif
diff --git a/src/frontend/runcoms.c b/src/frontend/runcoms.c
index 85fbdfd24..914fdfd6d 100644
--- a/src/frontend/runcoms.c
+++ b/src/frontend/runcoms.c
@@ -226,7 +226,7 @@ dosim(
       ft_setflag = TRUE;  /* don't allow abort upon interrupt during run  */
       ft_intrpt = FALSE;
       fprintf(cp_err, "Warning: resuming run in progress.\n");
-      com_resume((wordlist *) NULL);
+      com_resume(NULL);
       ft_setflag = FALSE;  /* Now allow aborts again  */
       return 0;
    }
diff --git a/src/frontend/runcoms2.c b/src/frontend/runcoms2.c
index a9fdfe3f4..b04aef929 100644
--- a/src/frontend/runcoms2.c
+++ b/src/frontend/runcoms2.c
@@ -63,7 +63,7 @@ com_resume(wordlist *wl)
 
    if (ft_curckt->ci_inprogress == FALSE) {
       fprintf(cp_err, "Note: run starting\n");
-      com_run((wordlist *) NULL);
+      com_run(NULL);
       return;
    }
    ft_curckt->ci_inprogress = TRUE;
diff --git a/src/frontend/where.c b/src/frontend/where.c
index b0300baa8..c3379ddd1 100644
--- a/src/frontend/where.c
+++ b/src/frontend/where.c
@@ -14,7 +14,7 @@ Author: 1985 Wayne A. Christopher, U. C. Berkeley CAD Group
 #include "where.h"
 
 void
-com_where(void)
+com_where(wordlist *wl)
 {
 	char	*msg;
 
diff --git a/src/frontend/where.h b/src/frontend/where.h
index b26a52e37..1ef9025d4 100644
--- a/src/frontend/where.h
+++ b/src/frontend/where.h
@@ -6,7 +6,7 @@
 #ifndef WHERE_H_INCLUDED
 #define WHERE_H_INCLUDED
 
-void com_where(void);
+void com_where(wordlist *wl);
 
 
 #endif
diff --git a/src/include/cpextern.h b/src/include/cpextern.h
index a47a1b551..4c00031f9 100644
--- a/src/include/cpextern.h
+++ b/src/include/cpextern.h
@@ -57,12 +57,12 @@ extern bool cp_debug;
 extern char cp_amp;
 extern char cp_gt;
 extern char cp_lt;
-extern void com_chdir();
-extern void com_echo();
-extern void com_strcmp();
-extern void com_rehash();
-extern void com_shell();
-extern void cp_ioreset();
+extern void com_chdir(wordlist *wl);
+extern void com_echo(wordlist *wl);
+extern void com_strcmp(wordlist *wl);
+extern void com_rehash(wordlist *wl);
+extern void com_shell(wordlist *wl);
+extern void cp_ioreset(void);
 extern wordlist *cp_redirect();
 extern wordlist *cp_parse();
 
@@ -103,7 +103,7 @@ extern char cp_bang;
 extern char cp_hat;
 extern int cp_maxhistlength;
 extern struct histent *cp_lastone;
-extern void com_history();
+extern void com_history(wordlist *wl);
 extern void cp_addhistent();
 void cp_hprint(int eventhi, int eventlo, bool rev);
 extern wordlist *cp_histsubst();
diff --git a/src/include/fteext.h b/src/include/fteext.h
index 32bf524f1..96348abe4 100644
--- a/src/include/fteext.h
+++ b/src/include/fteext.h
@@ -33,9 +33,9 @@ extern void outmenuprompt();
 
 /* aspice.c */
 
-extern void com_aspice();
-extern void com_jobs();
-extern void com_rspice();
+extern void com_aspice(wordlist *wl);
+extern void com_jobs(wordlist *wl);
+extern void com_rspice(wordlist *wl);
 extern void ft_checkkids();
 
 /* binary.c */
@@ -46,14 +46,14 @@ extern struct plot *braw_read();
 /* breakpoint.c */
 
 extern bool ft_bpcheck();
-extern void com_delete();
-extern void com_iplot();
-extern void com_save();
-extern void com_save2(wordlist *, char *);
-extern void com_step();
-extern void com_stop();
-extern void com_sttus();
-extern void com_trce();
+extern void com_delete(wordlist *wl);
+extern void com_iplot(wordlist *wl);
+extern void com_save(wordlist *wl);
+extern void com_save2(wordlist *wl, char *name);
+extern void com_step(wordlist *wl);
+extern void com_stop(wordlist *wl);
+extern void com_sttus(wordlist *wl);
+extern void com_trce(wordlist *wl);
 extern void ft_trquery();
 extern void dbfree( );
 
@@ -143,39 +143,39 @@ extern struct comm *cp_coms;
 
 /* compose.c */
 
-extern void com_compose();
+extern void com_compose(wordlist *wl);
 
 /* cpinterface.c symbols declared in CPextern.h */
 
 /* debugcoms.c */
 
-extern void com_dump();
-extern void com_state();
+extern void com_dump(wordlist *wl);
+extern void com_state(wordlist *wl);
 
 /* define.c */
 
 extern struct pnode *ft_substdef();
-extern void com_define();
-extern void com_undefine();
+extern void com_define(wordlist *wl);
+extern void com_undefine(wordlist *wl);
 extern void ft_pnode();
 
 /* device.c */
 
-extern void com_show();
-extern void com_showmod();
-extern void com_alter();
-extern void com_altermod();
+extern void com_show(wordlist *wl);
+extern void com_showmod(wordlist *wl);
+extern void com_alter(wordlist *wl);
+extern void com_altermod(wordlist *wl);
 
 /* diff.c */
 
-extern void com_diff();
+extern void com_diff(wordlist *wl);
 
 /* doplot.c */
 
-extern void com_asciiplot();
-extern void com_hardcopy();
-extern void com_plot();
-extern void com_xgraph();
+extern void com_asciiplot(wordlist *wl);
+extern void com_hardcopy(wordlist *wl);
+extern void com_plot(wordlist *wl);
+extern void com_xgraph(wordlist *wl);
 
 /* dotcards.c */
 
@@ -226,13 +226,13 @@ extern struct dvec *op_uminus();
 extern struct dvec *op_range();
 
 /* spec.c */
-extern void com_spec();
+extern void com_spec(wordlist *wl);
 
 /* com_fft.c */
 extern void com_fft(wordlist*);
 
 /* com_sysinfo.c */
-extern void com_sysinfo();
+extern void com_sysinfo(wordlist *wl);
 
 /* ginterface.c 
 
@@ -284,9 +284,9 @@ extern void gr_fixgrid();
 
 /* inp.c */
 
-extern void com_edit();
-extern void com_listing();
-extern void com_source();
+extern void com_edit(wordlist *wl);
+extern void com_listing(wordlist *wl);
+extern void com_source(wordlist *wl);
 void inp_dodeck(struct line *deck, char *tt, wordlist *end, bool reuse, 
 		struct line *options, char *filename);
 extern void inp_source();
@@ -301,7 +301,7 @@ extern FILE *inp_pathopen();
 void inp_nutsource(FILE *fp, bool comfile, char *filename);
 void nutinp_dodeck(struct line *deck, char *tt, wordlist *end, bool reuse, 
 		   struct line *options, char *filename);
-extern void nutcom_source();
+extern void nutcom_source(wordlist *wl);
 
 /* interpolate.c */
 
@@ -309,7 +309,7 @@ extern bool ft_interpolate();
 extern bool ft_polyfit();
 extern double ft_peval();
 extern void ft_polyderiv( );
-extern void com_linearize();
+extern void com_linearize(wordlist *wl);
 
 /* mfbinterface.c */
 
@@ -326,17 +326,17 @@ extern void mi_update();
 
 /* misccoms.c */
 
-extern void com_bug();
-extern void com_ahelp();
-extern void com_ghelp();
-extern void com_help();
-extern void com_quit();
-extern void com_version();
+extern void com_bug(wordlist *wl);
+extern void com_ahelp(wordlist *wl);
+extern void com_ghelp(wordlist *wl);
+extern void com_help(wordlist *wl);
+extern void com_quit(wordlist *wl);
+extern void com_version(wordlist *wl);
 extern int  hcomp();
-extern void com_where();
+extern void com_where(wordlist *wl);
 
 /* mw_coms.c */
-extern void com_removecirc();
+extern void com_removecirc(wordlist *wl);
 
 /* numparse.c */
 
@@ -390,17 +390,17 @@ extern void pi_update();
 
 /* postcoms.c */
 
-extern void com_cross();
-extern void com_display();
-extern void com_let();
-extern void com_unlet();
-extern void com_load();
-extern void com_print();
-extern void com_write();
-extern void com_destroy();
-extern void com_splot();
-extern void com_setscale();
-extern void com_transpose();
+extern void com_cross(wordlist *wl);
+extern void com_display(wordlist *wl);
+extern void com_let(wordlist *wl);
+extern void com_unlet(wordlist *wl);
+extern void com_load(wordlist *wl);
+extern void com_print(wordlist *wl);
+extern void com_write(wordlist *wl);
+extern void com_destroy(wordlist *wl);
+extern void com_splot(wordlist *wl);
+extern void com_setscale(wordlist *wl);
+extern void com_transpose(wordlist *wl);
 
 /* rawfile.c */
 extern int raw_prec;
@@ -414,25 +414,25 @@ extern void com_meas(wordlist *wl);
 
 /* resource.c */
 
-extern void com_rusage();
+extern void com_rusage(wordlist *wl);
 extern void ft_ckspace();
 extern void init_rlimits();
 
 /* runcoms.c */
 
-extern void com_ac();
-extern void com_dc();
-extern void com_op();
-extern void com_pz();
-extern void com_sens();
-extern void com_rset();
-extern void com_resume();
-extern void com_run();
-extern void com_tran();
-extern void com_tf();
-extern void com_scirc();
-extern void com_disto();
-extern void com_noise();
+extern void com_ac(wordlist *wl);
+extern void com_dc(wordlist *wl);
+extern void com_op(wordlist *wl);
+extern void com_pz(wordlist *wl);
+extern void com_sens(wordlist *wl);
+extern void com_rset(wordlist *wl);
+extern void com_resume(wordlist *wl);
+extern void com_run(wordlist *wl);
+extern void com_tran(wordlist *wl);
+extern void com_tf(wordlist *wl);
+extern void com_scirc(wordlist *wl);
+extern void com_disto(wordlist *wl);
+extern void com_noise(wordlist *wl);
 extern int ft_dorun();
 
 extern bool ft_getOutReq(FILE **, struct plot **, bool *, char *, char *);
@@ -518,7 +518,7 @@ extern bool ft_intrpt;
 extern bool ft_setflag;
 
 /* newcoms.c */
-extern void com_reshape();
+extern void com_reshape(wordlist *wl);
 
 /* dimens.c */
 extern void dimstring();