No offense to the upscale nature of the forum, but it's not like I'm minded to take the extra time to edit an IDL procedure just to illustrate a quick post - or did you have something else in mind that's not quite so 1980s? I yield to few in understanding and mumbling about the limitations and annoyances of IRAF, but there sure are a lot of things it does quickly and without complaint.

(For the 95% of posters for whom the above might as well be Old Church Slavonic - move along, nothing to see here...)