[MacPorts] #39939: Document the "subport=" command line option

[MacPorts]

#39939: Document the "subport=" command line option
--------------------------+--------------------------------
  Reporter:  software@…   |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  guide        |    Version:
Resolution:               |   Keywords:
      Port:               |
--------------------------+--------------------------------
Changes (by mf2k@…):

 * owner:  markd@… => macports-tickets@…
 * version:  2.2.0 =>


Comment:

 markd has retired. See #44782.

-- 
Ticket URL: <https://trac.macports.org/ticket/39939#comment:5>
MacPorts <http://www.macports.org/>
Ports system for OS X