reftex-reference
reftex-reference is an interactive autoloaded Lisp function in `reftex-ref.el
'.
(reftex-reference &optional TYPE NO-INSERT CUT)
Make a LaTeX reference. Look only for labels of a certain TYPE.
With prefix arg, force to rescan buffer for labels. This should only be
necessary if you have recently entered labels yourself without using
reftex-label. Rescanning of the buffer can also be requested from the
label selection menu.
The function returns the selected label or nil.
If NO-INSERT is non-nil, do not insert \ref command, just return label.
When called with 2 C-u prefix args, disable magic word recognition.