doc: document/register the "start on" events
it is not clear what are the "start on" events.
I had to search to find:
start on local-filesystems
I believe something as fundamental as "start on local-filesystems" should be documented somewhere in the core documentation.
(and "man upstart" tells you almost nothing)
I think to help with this, when someone writes a new package which provides new events for upstart, they should submit the new event to the upstart development group. The new event would then get added to a registry of upstart events.
This is kind of how IANA does it - and then the list of allowed values for any parameter is published.
For example, http://