conventions This document uses the following conventions Descriptions Appearance Warnings Don't run with scissors! Hint Warm jar lids under the hot tap to loosen them. Notes Dear John... Information requiring special attention Read this or the cat gets it. File Names file.extension Directory Names directory Commands to be typed command Applications Names application Prompt of users command under bash shell bash$ Prompt of root users command under bash shell bash# Prompt of user command under tcsh shell tcsh$ Environment Variables VARIABLE Emphasized word word Code Example para Beginning and end of paragraph para