A character range may be specified with a hyphen, so C<tr/A-J/0-9/>
does the same replacement as C<tr/ACEGIBDFHJ/0246813579/>.
-For B<sed> devotees, C<y> is provided as a synonym for C<tr>. If the
+
+For B<sed> devotees, C<y> is provided as a synonym for C<tr>.
+
+If the
I<SEARCHLIST> is delimited by bracketing quotes, the I<REPLACEMENTLIST>
must have its own pair of quotes, which may or may not be bracketing
quotes; for example, C<tr[aeiouy][yuoiea]> or C<tr(+\-*/)/ABCD/>.
But, even for portable ranges, it is not generally obvious what is
included without having to look things up. A sound principle is to use
-only ranges that begin from and end at either ASCII alphabetics of equal
-case (C<b-e>, C<B-E>), or digits (C<1-4>). Anything else is unclear
-(and unportable unless C<\N{...}> is used). If in doubt, spell out the
-character sets in full.
+only ranges that both begin from and end at either ASCII alphabetics of
+equal case (C<b-e>, C<B-E>), or digits (C<1-4>). Anything else is
+unclear (and unportable unless C<\N{...}> is used). If in doubt, spell
+out the character sets in full.
Options: