ada-narrow-to-defun
ada-narrow-to-defun is an interactive compiled Lisp function in `ada-mode.el
'.
(ada-narrow-to-defun &optional ARG)
Make text outside current subprogram invisible.
The subprogram visible is the one that contains or follow point.
Optional ARG is ignored.
Use C-x n w to go back to the full visibility for the buffer.