Is "for" necessary?

No, it is not necessary, although 'for' may occur in casual conversation.

Or Tang you can say "...know for how..."

Then of course, you'd not use it at the end

Thanks to both of you.

Not at all Tang; Con and I take this stuff seriously; tho he's more tech-tail oriented than me

I ustda say 'I' there but now I'm not so sure of anything

But hwja like 'tech-tail' for 'technicality and detailed.' Its stuff like that I guess I'm gonna hafta quit pretty soon

...although if I'm attacked for using " ' ", " ' " in place of " " ", " " "why, I might give up entirely. After all that's seven more keystrokes already, nine if you caount the spacebar

...that is, if you consider the carret a keystroke


Esl's, my profound apology for that'n'