ifier">pack_start</span>(<span class="ruby-identifier">location_input</span> = <span class="ruby-constant">Entry</span>.<span class="ruby-identifier">new</span>)
        <span class="ruby-identifier">location_input</span>.<span class="ruby-identifier">width_chars</span> = <span class="ruby-value">60</span>
        <span class="ruby-identifier">location_input</span>.<span class="ruby-identifier">text</span> = <span class="ruby-ivar">@location</span> <span class="ruby-operator">||</span> <span class="ruby-val