<!ATTLIST section name CDATA #REQUIRED>
<!ELEMENT option (#PCDATA | p | optdesc)*>
<!ELEMENT optdesc (#PCDATA | p )*>
-<!ELEMENT cmd (#PCDATA | arg)*>
+<!ELEMENT cmd (#PCDATA | arg | opt)*>
<!ELEMENT options (p | option)*>
<!ELEMENT seealso (p)*>
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