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<title>Missing Unix Version 7 ms Macros (The GNU Troff Manual)</title>
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<h4 class="subsubsection" id="Unix-Version-7-ms-macros-not-implemented-by-groff-ms">4.6.7.1 Unix Version 7 <samp class="file">ms</samp> macros not implemented by <code class="code">groff</code> <samp class="file">ms</samp></h4>
<p>Several macros described in the Unix Version 7 <samp class="file">ms</samp>
documentation are unimplemented by <code class="code">groff</code> <samp class="file">ms</samp> because they
are specific to the requirements of documents produced internally by
Bell Laboratories, some of which also require a glyph for the Bell
System logo that <code class="code">groff</code> does not support. These macros
implemented several document type formats
(<code class="code">EG</code>, <code class="code">IM</code>, <code class="code">MF</code>, <code class="code">MR</code>, <code class="code">TM</code>, <code class="code">TR</code>), were meaningful only in conjunction with the use of certain document
types
(<code class="code">AT</code>, <code class="code">CS</code>, <code class="code">CT</code>, <code class="code">OK</code>, <code class="code">SG</code>), stored the postal addresses of Bell Labs sites
(<code class="code">HO</code>, <code class="code">IH</code>, <code class="code">MH</code>, <code class="code">PY</code>, <code class="code">WH</code>), or lacked a stable definition over time
(<code class="code">UX</code>). To compatibly render historical <samp class="file">ms</samp> documents using these macros,
we advise your documents to invoke the <code class="code">rm</code> request to remove any
such macros it uses and then define replacements with an authentically
typeset original at hand.<a class="footnote" id="DOCF17" href="groff.html_fot.html#FOOT17"><sup>17</sup></a> For
informal purposes, a simple definition of <code class="code">UX</code> should maintain the
readability of the document’s substance.
</p>
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<pre class="example-preformatted">.rm UX
.ds UX Unix\"
</pre></div>
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