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+.TH VIMDIFF 1 "2001 March 30"
+.SH NAME
+vimdiff \- edit two or three versions of a file with Vim and show differences
+.SH SYNOPSIS
+.br
+.B vimdiff
+[options] file1 file2 [file3]
+.PP
+.B gvimdiff
+.SH DESCRIPTION
+.B Vimdiff
+starts
+.B Vim
+on two (or three) files.
+Each file gets its own window.
+The differences between the files are highlighted.
+This is a nice way to inspect changes and to move changes from one version
+to another version of the same file.
+.PP
+See vim(1) for details about Vim itself.
+.PP
+When started as
+.B gvimdiff
+the GUI will be started, if available.
+.PP
+In each window the 'diff' option will be set, which causes the differences
+to be highlighted.
+.br
+The 'wrap' and 'scrollbind' options are set to make the text look good.
+.br
+The 'foldmethod' option is set to "diff", which puts ranges of lines without
+changes in a fold.  'foldcolumn' is set to two to make it easy to spot the
+folds and open or close them.
+.SH OPTIONS
+Vertical splits are used to align the lines, as if the "-O" argument was used.
+To use horizontal splits intead, use the "-o" argument.
+.PP
+For all other arguments see vim(1).
+.SH SEE ALSO
+vim(1)
+.SH AUTHOR
+Most of
+.B Vim
+was made by Bram Moolenaar, with a lot of help from others.
+See ":help credits" in
+.B Vim.