[TxMt] Mailing list reply direction & history standards question.

[Jack Matier]

I'm fairly new to mailing lists and was wondering what the standard is 
for forming replies. I generally try to follow the reply direction that 
the current thread is following but was wondering if there was a standard.

Do I form a reply at the bottom or the top?

also.

Do I include the immediate parent thing I'm replying to or the whole 
history?