11.10.2.4 Preformatted Code

To write preformatted code inside a section, indent the code by three spaces after ‘#’ at the beginning of each line and leave the lines above and below the code blank, except for ‘#’ at the beginning of those lines.

##
# This is a syntax highlighted for-loop:
#
#   for i = 1:5
#     disp (i);
#   endfor
#
# And more usual text.

© 1996–2020 John W. Eaton
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https://octave.org/doc/v5.2.0/Preformatted-Code.html