I wrote PRCommandLink to enable a link to a command to be inserted into
a document like so:
I remember seeing something in more recent pier's that would/may provide
this functionality, but I cant remember what it was.
I have just found PRCommandWidget (which I wrote, but was hiding in the
Pier-Seaside category) I have exported it to pieraddons, and offer it as
a potentially useful addition to Pier-Seaside.