4.2BSD/usr/man/man1/whatis.1

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.TH WHATIS 1 "18 January 1983"
.UC 4
.SH NAME
whatis \- describe what a command is
.SH SYNOPSIS
.B whatis
command ...
.SH DESCRIPTION
.I Whatis
looks up a given command and gives the header line from the manual section.
You can then run the 
.IR man (1)
command to get more information.
If the line starts `name(section) ...' you can do
`man section name' to get the documentation for it.
Try `whatis ed' and then you should do `man 1 ed' to get the manual.
.PP
.I Whatis
is actually just the
.B \-f
option to the
.IR man (1)
command.
.SH FILES
.DT
/usr/lib/whatis	Data base
.SH "SEE ALSO"
man(1), catman(8)
.SH AUTHOR
William Joy