The CREDITS class displays the send and receive credit counts for each
  connection.  This class includes fields that indicate the minimum,
  current, and initial credit counts.

1  –  INIT_REC

   Initial receive credit extended to the remote system when the
   connection was made.

2  –  MIN_REC

   Minimum receive credit (minimum send credit required by the
   remote system).

3  –  MIN_SEND

   Minimum send credit.

4  –  PEND_REC

   Receive credit not yet extended to the remote system.

5  –  RECEIVE

   Receive credit (send credit held by the remote system).

6  –  SEND

   Current send credit.