How to execute command (as opposed to function) from the command prompt

[Chris Green]

This sounds as if it should be obvious but I can't find (in the
documentationa) how to do it.

How do you execute a *command* from the mutt command prompt?

So, for example, having hit : to get to the command prompt how can I
do <sidebar-toggle-visible> to show/hide the sidebar?

By default the command prompt is expecting muttrc configuration
commands, not things like sidebar-toggle-visible.

-- 
Chris Green