Brett Schlank asked,
| Does anyone know where I can get a hold of what the letters after :0 can
| mean?
They're all detailed in the procmailrc(5) man page.
| Does capitalization have any signifigance?
YES! Usually it doesn't in search expressions (unless you use the `D' flag)
but it most certainly does in flags. `A' is different from `a', `B' from
`b', `E' from `e', `H' from `h', and `W' from `w'. `D' is valid but `d'
is not; `c', `f', `i', and `r' are valid flags but the corresponding capital
letters are not.
| I have looked at the procmail and
| procmailex man pages, but there is no clear definition. If I am missing
| something, please let me know! :)
You're missing the experience of reading the procmailrc(5) man page.