Where is Elisp evaluation documented in the Org Manual?

[Perry Smith]

I wanted to format a key binding in Org mode and, of course, I wanted to do it 
properly so I started surfing around and then hit upon the idea of just looking 
at the source of the Org manual for examples.

I discovered that it can be done like {{{kbd(M-TAB)}}}

Fascinating!!!  And I bet expr in the form of {{{ expr }}} could be any Elisp 
expression.  Cool!

But, where in the Org manual is this documented?  I’m curious what other things 
are possible.  So far, I’ve not been able to find it.  I did find something 
about Capture Templates but I’m not at that pay grade yet.

(I’m not on the list so please CC me on your replies)
Thank you,
Perry

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