Menu options
From OpenKM Documentation
Menu options feature allow to set toolbar menu options what open popup with external URL and passing uuid as parameter of the selected UI object ( document, mail, folder or record ).
Configuration
There's a configuration property at Administration / Configuration called extension.toolbar.menu. Each row couple of values is a menu popup declaration, the format is: name;url;width;heigh
Example
menu1; http://www.openkm.com;500;500 menu2; http://www.openkm.com;700;700 menu3; http://www.wiki.openkm.com;900;300 menu4; http://www.forum.openkm.com;500;900
Use
Click some menu option in toolbar.
Will be shown a popup with the selected URL with the uuid parameter of the selected object.