matches @samp{cr}, @samp{car}, @samp{cdr}, @samp{caddaar}, etc.
You can also include character ranges in a character set, by writing the
-startong and ending characters with a @samp{-} between them. Thus,
+starting and ending characters with a @samp{-} between them. Thus,
@samp{[a-z]} matches any lower-case ASCII letter. Ranges may be
intermixed freely with individual characters, as in @samp{[a-z$%.]},
which matches any lower case ASCII letter or @samp{$}, @samp{%} or