dummy inlet designed to be a hook for the outlet of [doc_m].
name to be displayed. clicking on the object will cause \$1-help.pd to be opened.
<--- this is a [doc_link #hello] that points to #hello-help.pd. the file will be looked for according to [gf/find_file 1], that is, like a [gf/find_file 0] in its parent.
if 0, look for \$1-help.pd in doc/flow_classes/
if 1, look for \$1.pd in doc/