I am still computing in full screen text mode on CRT monitors, so it's
80 columns and 8 character tab as indentation for me. It is a golden
standard.
From Linux kernel coding style doc:
"Tabs
are 8 characters, and thus indentations are also 8 characters.
There are heretic movements that try to make indentations 4 (or even
2!) characters deep, and that is akin to trying to define the value of
PI to be 3."
--Andy