: <a href="index.html#type-d3pie_callback_argument">d3pie_callback_argument</a> <span>&#45;&gt;</span> unit;</code></td></tr><tr id="type-d3pie_callbacks.on_mouseover_segment" class="anchored"><td class="def field"><a href="#type-d3pie_callbacks.on_mouseover_segment" class="anchor"></a><code>on_mouseover_segment : <a href="index.html#type-d3pie_callback_argument">d3pie_callback_argument</a> <span>&#45;&gt;</span> unit;</code></td></tr><tr id="type-d3pie_callbacks.on_mouseout_segment" class="anchored"><td cl