+*MPID* means *Mother Port ID*. It represents a port which is known to be
+binary compatible to other OS/ARCH distributions.
+
+
 |*Distro*                   | *Arch* | *MPID* | *Developer Port*       |
 |AIX 5.1                    | PPC    |        | Clipped, Native 32-bit |
 |AIX 5.2L                   | PPC    |    A   | Clipped, Native 32-bit |