Jump points
From MythTV Official Wiki
Jump points are a type of keybinding which allow the definition of a single-keypress jump from any menu into a pre-defined list of mythfrontend menus, eg. 'Main Menu', 'Live TV', 'Program Finder'. Several plugins also support jump-points, eg. 'Play DVD', 'MythGallery', 'Video Gallery'.
<button>
<type>JUMP_VIDEO_GALLERY</type>
<text>Videos</text>
<action>JUMP Video Gallery</action>
<depends>mythvideo</depends>
</button>
To see a list of available jump points, install mythweb and visit the key bindings page ( Possibly http://localhost/mythweb/settings/mythtv/keys )