Required spaces are indicated with _. Parameters are indicated in ALLCAPS
or by a special character such as the hash mark #. Optional or suggested
information is shown as normal text in (parentheses).
Markers are indicated in the following manner
E.g. "\id " means that this marker has no endmarker.
E.g. "\f *" signals that this marker has an obligatory endmarker.
E.g. "\ft (*)" signals that this marker has an optional endmarker.