ShowPic v6.0 is an almost complete rewrite, hence some things have changed.
Please read the documentation to get the inside scoop.  Here are some of
the highlights:

The ROM 03 quirk probably still exists.  If you have a ROM 03 machine, you
will have to use the key equivalents to take any actions in the ShowPic
main window.

Several Command Keys have changed.  Please see the Help window or
documentation.

ShowPic v6.0 makes extensive use of resources.  You may modify some of
these to suit your needs.  For example the default filename used in
the Save File Dialog is a C1 GS/OS String resource.  There is a Cursor
resource you can modify/delete.  The 3200 Color, GIF, and MacPaint
routines are in Code resources and may be deleted if you need the
space.  See the file in the "Stripped" folder for a stripped version
of ShowPic.