tx question

[Raymond Hall]

hi there,

what does the last line in iwconfig exactly mean, e.g:

Tx excessive retries:330143  Invalid misc:69271 

What's a retry in a wireless medium, what are invalid misc?
tia,
Ray

-- 
"Even if World War I consisted of nothing but a very, very large number
of quarks in a very, very complicated pattern of motion, no insight is
gained by describing it that way"
Steven Pinker, on reductionism. "The Blank Slate" p. 70