--- pnm/pnmmerge.c.orig	Sun Aug 13 12:51:50 1995
+++ pnm/pnmmerge.c	Mon Oct 18 00:14:51 1999
@@ -55,12 +55,15 @@
     TRY("pnmgamma", pnmgamma_main);
     TRY("pnminvert", pnminvert_main);
     TRY("pnmhistmap", pnmhistmap_main);
+    TRY("pnmhistep", pnmhisteq_main);
     TRY("pnmnlfilt", pnmnlfilt_main);
     TRY("pnmnoraw", pnmnoraw_main);
+    TRY("pnmpad", pnmpad_main);
     TRY("pnmpaste", pnmpaste_main);
     TRY("pnmrotate", pnmrotate_main);
     TRY("pnmscale", pnmscale_main);
     TRY("pnmshear", pnmshear_main);
+    TRY("pnmsmooth", pnmsmooth_main);
     TRY("pnmtile", pnmtile_main);
     TRY("pnmtoddif", pnmtoddif_main);
     TRY("pnmtofits", pnmtofits_main);
