Manual pages - Section 3:
- DB
- abort
- arith
- assert
- atof
- cbt
- chrtab
- crypt
- ctime
- ctype
- curses
- db
- dbm
- dialout
- directory
- dkmgr
- ecvt
- end
- erf
- exp
- fclose
- ferror
- floor
- fopen
- fread
- frexp
- fseek
- ftw
- galloc
- gamma
- getarg
- getc
- getenv
- getfsent
- getgrent
- getlogin
- getopt
- getpass
- getpwent
- gets
- getwd
- hypot
- internet
- intro
- j0
- l3tol
- malloc
- map
- memory
- mktemp
- monitor
- mp
- nlist
- perror
- plot
- popen
- port
- printf
- ptopen
- putc