ibuffer-forward-next-marked
ibuffer-forward-next-marked is an interactive autoloaded Lisp function in `ibuf-ext.el
'.
(ibuffer-forward-next-marked &optional COUNT MARK DIRECTION)
Move forward by COUNT marked buffers (default 1).
If MARK is non-nil, it should be a character denoting the type of mark
to move by. The default is `ibuffer-marked-char'.
If DIRECTION is non-nil, it should be an integer; negative integers
mean move backwards, non-negative integers mean move forwards.