I did indeed. Hmm.... I tried -Ans( and everything to get a negative number.......... I'm really trying to avoid writing the subroutine to do it for me..... there must be an easier way....

I even wrote a routine that will do that (for the homescreen, but you can adapt it) as a response in the feature requests topic, but others had already posted. For reference, it would go something like this:
Lbl DSN
If r₁<<0
Disp "^-
End
Disp r₁➤Dec
Return
Then you'd just replace "Disp X➤Dec" with "DSN(X)"
Something I'd like to reiterate: There is absolutely no difference between, say, 65535 and -1. Which way it is interpreted depends on the routine acting on it (for example, < vs <<)

More likely just misremembering. The closest statement to that that would be true is that X≤0 is only true if X is 0.

Glad to hear it,  can't wait to see this when it's done

sounds cool if you need help with anything else just post!

at first I thought this was some program that did real graphing like with formulas. That would be cool. This looks great too, tho.