Any line having an # (ASCII 0x23) character in the first column
is a comment line.
Comment lines are quite useful to insert additional information that is not part of the database but useful otherwise.
It is also quite convenient to comment-out information from the recfile without having to remove it in a definitive way: you may want to recover the data into the database later! Comment lines can be used to comment-out both full registers and single fields:
Name: Jose E. Marchesi
# Occupation: Software Engineer
# Severe lack of brain capacity
# Fired on 02/01/2009 (without compensation)
Occupation: Unoccupied
Comments are also useful for headers, footers, comment blocks and all kind of markers:
# -*- mode: rec -*-
#
# TODO
#
# This file contains the Bugs database of GNU recutils.
#
# Blah blah...
...
# End of TODO