description of what the knob is and does. The intent is to
help porters keep like-name knobs through out the ports tree
and end-users have a single file they can look up knobs in.
Limitations to KNOBS: In the future we plan to add support for OPTIONS
to support the KNOBS file, and so dialog(1) will be able to handle the
size of each knob knob-name's are limited to 12 characters and
knob-descriptions are limited to 45 characters, not including the
white space between the knob-name and knob-description.
Naming knobs: When a port has a lib-prefix (ie: libquicktime, libxine)
the lib-prefix should be stripped from the knob name.
(ie: QUICKTIME, XINE)
Based around: brain storm ideas from mezz and I
Approved by: portmgr
