The Capable byline
Every page gets a single "Capable" entry in its byline, next to the author and the date. That menu is the front door to everything the suite can do with the page you are looking at.
It matters more than it sounds, because several capabilities have no macro and no navigation item. The byline is the only way to reach them.
#Opening it

Route | Detail |
|---|---|
Click | The "Capable" entry in the page byline |
Keyboard | Press the comma key |
#What is only in here
Source, Export, Tasks and numbered headings have no other entry point in the product.
#Searching from it
Typing in the byline panel queries every installed capability at once, and returns each one's matches under its own heading. It is the fastest way to find something related to the page you are on.

Per-capability byline entries hide themselves until the page uses them. On a brand new page you see only the single "Capable" entry, because indexing has not yet recorded what the page contains. That is expected, not a fault.
#A few things worth knowing
This is a suite feature. Standalone apps show their own byline entry rather than a unified one.
The comma shortcut works when the page has focus, not while you are typing in an editor.
A capability hidden by an administrator disappears from here too.
#Related
One menu. Press comma.
