.TH CDIFF 1
.SH NAME
cdiff \- context diff
.SH SYNOPSIS
\fBcdiff\fR [\fB\-c\fIn\fR] \fIoldfile \fInewfile\fR
.br
.de FL
.TP
\\fB\\$1\\fR
\\$2
..
.de EX
.TP 20
\\fB\\$1\\fR
# \\$2
..
.SH OPTIONS
.FL "\-c" "Provide \fIn\fR lines of context"
.SH EXAMPLES
.EX "cdiff old new >f" "Write context diff on \fIf\fR"
.EX "cdiff \-c1 old new >f" "Use only 1 line of context"
.SH DESCRIPTION
.PP
\fICdiff\fR produces a context diff by first running \fIdiff\fR and then 
adding context.  
Some update programs, like \fIpatch\fR, can use context diffs to update
files, even in the presence of other, independent changes.
.SH "SEE ALSO"
.BR cmp (1),
.BR diff (1),
.BR patch (1).