EPICS base sub record & synApps userAve records
-----------------------------------------------

The ``sub`` record is part of EPICS base:
https://epics.anl.gov/base/R7-0/6-docs/subRecord.html

The user average databases (``$(P)userAve$(N)``) are from synApps.

.. automodule:: apstools.synApps.sub
    :members: