Unix man pages are divided up into a number of sections

Section	Contents	Pages on server
1	Executable programs and shell commands	entries avaiable
2	System calls	entries avaiable
3	Library calls	entries avaiable
4	Special files	entries avaiable
5	File formants and conventions	entries avaiable
6	Games	entries avaiable
7	Miscellaneous	entries avaiable
8	System administration commands	entries avaiable
9	Kernel routines (Non standard)	entries avaiable