<desc>ID of the subwindow of which the tag will be changed. If 0, the window containing this action will be affected.</desc>
</param>
<param>
<type>object</type>
<name>target</name>
<desc>Target of the subwindow of which the tag will be changed.</desc>
</param>
</params>
</syntax>
<desc>Action for a GUI window event such as OnClick.</desc>
<remark>Changing the tag of a window is not synchronized over network. This means that other players will not see when one player for example hovers over a menu window; if you need the tag to be set for all players, use <funclink>GuiAction_Call</funclink>() with <funclink>GuiUpdateTag</funclink>().</remark>
<remark>See the <emlinkhref="script/GUI.html">GUI documentation</emlink> for further explanations.</remark>