I see that Linux version of glvis-1.6 (compiled from glvis-1.6.tar.bz2) shows wrong version (1.5).

--- glvis.cpp   2006-07-06 19:19:49.000000000 +0200
+++ glvis.cpp   2006-08-16 11:42:35.000000000 +0200
@@ -157,7 +157,7 @@

 static void ShowUsage()
 {
-       fprintf(stderr, "\nGLVIS version 1.5, Copyright (c)2000-2002 Janis "
+       fprintf(stderr, "\nGLVIS version 1.6, Copyright (c)2000-2002 Janis "
                "Legzdinsh ("__DATE__" "__TIME__")\n");
        fprintf(stderr, "Usage: glvis [options] file[.wad]\n");
        fprintf(stderr, "    -s            silent mode\n");

<!-- s8) --><img src="{SMILIES_PATH}/icon_cool.gif" alt="8)" title="Cool" /><!-- s8) -->

Ooops. Reuploading.