How to hide some of the menu entries by editing the DITA map

One method for hiding some of the menu entries is to edit the DITA map and mark the topics that do not need to be included in the menu. To edit the metadata in the DITA map to control which topics will not be displayed in the menu, follow these steps:

Open the DITA map in the Text editing mode of oXygen.
Add the following metadata information in the topicref element (or any of its specializations) for each topic you do not want to be displayed in the menu:
```
<topicmeta>
  <data name="wh-menu">
    <data name="hide" value="yes"/>        
  </data>
</topicmeta>
```