I finally found this
http://forum.hosteng.com/wndm/HTMLHelp1/Ladder_View/The_Ladder_Editor.htm which is not to say it is hidden, just that it took me awhile to find it.
But I am still looking for an actual
list of DMD hot keys (hotkeys, shortcut keys, whatever.)
Also, something I have never found is an
Edit the current highlighted instruction keyboard shortcut. I don't really want to double click with the mouse and I don't always want to simply type over the instruction. Typeover is OK for a single address contact but doesn't work too well for a comparison or math box. So please, if it is there, tell me how. If not, well i
need it (to be happy!)(I have the same desire in DirectSoft.)
I am still struggling with unexpected behavior in MATH and SCALE boxes, etc. I have not yet hit on the correct keystrokes to reliably go from one field to the next without it complaining (<Enter> after destination in MATH), Element Browser trying to select the next field in SCALE with the mouse. So I am looking for tips here. I would be fine all keyboard based, but since I have to use the mouse to begin the edit I tend to try to use it to select the field and boom!, I have double clicked into the Element Browser.
While I am at it. How do I abort a rung edit without dropping out of edit mode? I have had that problem forever.
One more. After a <Ctrl><F>, what quick keyboard strokes will close the Find window? I have to close it with a mouse click now which is annoying. Every other program I use lets me <Esc> out of it and then use F3 or <Shift><Ctrl><F> but the focus is no longer on the Find window in DMD. Yes, it is more powerful, but I want to close it easily.
At some point I am going to feel really, really guilty about whining over free software...

This really is some seriously nice stuff though guys, thanks! Over the years I have done some crazy stuff trying to work with BCD or strings in the Koyo processors (long division for fractional inch entry and display e.g.), and even the floating point in the later ones is somewhat involved. My current project looks downright skimpy compared to the sheer number of instructions I would have needed in a D2-260. Which just keeping me wanting more, more, more!