org-refer-by-number.el – refer to things by number, when direct
linking is not possible These reference numbers are added to and
kept in a table along with the timestamp of their creation. The
reference numbers may then be used to refer to things outside of
Org (e.g. by writing them on a piece of paper or use them as
part of a directory name). Within Org you may then refer to
these things by their number (e.g. "R153"). Later, these
reference numbers can be looked up easily. Written by
Marc-Oliver Ihm. Link to raw file .