1 - General Commands intro(1)
2 - System Calls intro(2)
3 - Subroutines intro(3)
4 - Special Files intro(4)
5 - File Formats intro(5)
6 - Games intro(6)
7 - Macros and Conventions intro(7)
8 - Maintenance Commands intro(8)
9 - Kernel Interface intro(9)
n - New Commands