Presentation Space ID Handling

The PSID is used to specify the host presentation space (or session) in which you desire a function to operate. The way the PSID is handled is affected by two factors:

1. The method used to specify the PSID:
   1. As the calling data string parameter of a preceding call to the Connect Presentation Space (1) function
   2. As a character in the calling data string of the function being executed. Handling varies depending on whether the character is:
      • A letter A through Z
      • A blank or a null
2. The status of the connection to the host presentation space.