<span>&#45;&gt;</span> <span><span class="type-var">'a</span> Cmdliner.Term.t</span> <span>&#45;&gt;</span> <span><span class="type-var">'a</span> Cmdliner.Term.t</span></code></dt><dd><p>Add an unit term that need to be evaluated at the same time at the main term.</p><p>The order of evaluation is unspecified, but the option will be evaluated before the resulting term is returned.</p></dd></dl><dl><dt class="spec value" id="val-add_options"><a href="#val-add_options" class="anchor"></a><code><span class="ke