.. |biohazard| image:: biohazard.png
.. |Red light| image:: red_light.png
.. |Michael| user:: mjones
.. |Jon| user:: jhl
----------------------------------------------------
[
["punctuation", ".."],
["substitution-def", [
["substitution", [
["punctuation", "|"],
"biohazard",
["punctuation", "|"]
]],
["directive", [
"image",
["punctuation", "::"]
]]
]],
" biohazard.png\r\n",
["punctuation", ".."],
["substitution-def", [
["substitution", [
["punctuation", "|"],
"Red light",
["punctuation", "|"]
]],
["directive", [
"image",
["punctuation", "::"]
]]
]],
" red_light.png\r\n\r\n",
["punctuation", ".."],
["substitution-def", [
["substitution", [
["punctuation", "|"],
"Michael",
["punctuation", "|"]
]],
["directive", [
"user",
["punctuation", "::"]
]]
]],
" mjones\r\n",
["punctuation", ".."],
["substitution-def", [
["substitution", [
["punctuation", "|"],
"Jon",
["punctuation", "|"]
]],
["directive", [
"user",
["punctuation", "::"]
]]
]],
" jhl"
]
----------------------------------------------------
Checks for substitution definitions.
