There are potentially four sources of configuration settings
    which are shown below in decreasing order of precedence:

    1. Unchangeable, system-wide settings from the PMDF_
       TABLE:PINE.CONF-FIXED file.

    2. Per-user settings from the user's PMDF_INIT:PINE.PINERC file.

    3. System-wide settings from the PMDF_TABLE:PINE.CONF file.

    4. Default Pine values.

    One exception to the above precedence scheme is the FEATURE-LIST
    option which is cumulative. In order to turn off a feature, you
    have to negate it by prepending NO- in front of an individual
    feature.