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+wdiff (display word differences between text files)
+
+The GNU wdiff program is a front end to diff for comparing files on a word
+per word basis. A word is anything between whitespace. This is useful for
+comparing two texts in which a few words have been changed and for which
+paragraphs have been refilled. It works by creating two temporary files,
+one word per line, and then executes diff on these files. It collects the
+diff output and uses it to produce a nicer display of word differences
+between the original files.