The X1 manual says that you can lock a view by:

1) Clicking the "lock button" at the top right of the view
2) Clicking the upper left corner of a window and choosing "lock contents" from the pop-up menu
3) If the view is in the MultiDock, right click the view's tab and choose "lock contents." 

However,

1) There is no "lock button"
2) The menu offers no such option
3) The tab's menu also offers no such option. 

I feel like I'm going mad, looking for something that the manual describes which is completely non-existent. Does anyone else have this feature? 

Depends what you mean by locking a "view"

You can lock the current screenset by right clicking in the screenset box and choose "lock"
You can lock individual clips by right clicking them where you can choose to lock contents and/or position

Yes, that feature is available, however, it's only for the views that allow data editing, such as the Piano Roll view, Step Sequencer, etc. The Lock Contents feature doesn't actually lock the view. You can still change the data in the view, etc.

What it does is allow you to open multiple views of the same type. For example, by default, if you double-click a MIDI clip, that clip will open in a PRV window (or tab in the MultiDock). Then if you double-clip another clip, that clip will open in the same PRV window. But if you use Lock Contents on the current PRV, then that PRV will remain unchanged and a new PRV window will open when you double-click that second clip.

Scott

--
Scott R. Garrigus - http://garrigus.com
* Author of the Cakewalk Sonar and Sony Sound Forge Power book series: http://garrigus.com/?PowerBooks
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