Need Help! what is G79

I downloaded some programs off my 1992 Citizen L20 3M6 and some of the commands used are not in my manual.
Can any on explain G79z1.25I.2k.05A.03F.0035
I saw one comment in the manual G79,G83,G84,G85 are optional commands for Deep Hole Drilling,Tapping Boring etc....I think this is a peck drill callout but what would A.03 Can anyone tell me about these commands? Google search yields nothing!

Also they callout a tool command like this:
T1200H.35
what is H.35????

Also used in the program is M61. What is M61?

Also used :
G1G41x.537z.0005F.003
x.573,c.012
G1G9x.573z.93F.0062
x.713,c.012T1F.001
x.713z1.2F.0035
x.765,C.012
W.03

what are all the C.012???


Thanks
Russ