I didn't think we could use ALT+xxxx ASCII code fonts in messages! What a Bozo I am!
I would guess now, that it's possible
I have the same ASCII list for standard sets in my pocket PC ref. book, as the one you have attached.
The PC ref. book and the ASCII chart show Phi to be Decimal 232 [ALT + 0232] - which I think is an italic font.
For the Omega font, it's Decimal 234, Infinity is Decimal 236, and finally, zero with slash is Decimal 237.
I use these ALT and CTRL key code fonts on many tech documents.
FYI: If you use Windows, there's a utility that comes with it, called "Character Map", which shows the ALT or CTRL + xxxx keystroke combinations for characters on all the resident fonts loaded into Windows [all the fonts you can use without a 2nd party manager].
Typically, this is around 75 or more local fonts.
Check it out!! It's cool!!
I had it on old windows [windows 3.1], plus have it on Win 95 [first release and OSR 2.5]. Seen it in Win 98 - both 1st release and SE. Windows ME is unknown.
Sure it's in Windows NT 3.5 and 4.0 [workstation maybe, definitely in NT server], so 99.9999% sure it's also on Windows 2000 Pro and Server.
On Old Windows, look in the Control Panel [or is it Main??].
For Win 95/98, it's: Start / Programs / Accessories / Character Map. [if not installed, go to the Control Panel / Add-Remove Programs, then the Windows Setup tab, then select to add Character Map].
From a DOS prompt [typically C:\> - you know, the Command Line, or command.com], you can try ALT + xxxx combos to see what comes up!!
Great fun at parties!!
Scott SET © SET US PAT OFF. ½ here, ¶ in the face