Style sheet for proofreading tsh documentation

<pre>
1&ndash;10
  when typographically appropriate
apostrophe&rsquo;s
  except in <title>
&ldquo;quoted text&rdquo;
  always
&ldquo;<code>command names and other input text</code>&rdquo;
  - except in table listing all commands, where quotation marks are omitted
  - command names are given in MixedCase with capital letters showing
    permissible abbreviations when shown in their longest form, and in
    lowest case when showing the abbreviated form
&ldquo;names of keys on keyboard&rdquo;
  always
&ldquo;filename&rdquo;
  always
&ldquo;.t&rdquo;
  always
<p class=p1>Regularly indented paragraph</p>
  always
<cite>tsh</cite>
  except in <title>
<em>emphasized text</em>
  rather than italics
his/her, s/he
  rather than their, them
</pre>
