Key to Table 4-7-1: Predefined Fields Attributes

The following table specifies the attributes of each APPX predefined field (PDF). The following items are included in the table:

• The PDF name, which is the exact name of the PDF as you would specify it in a statement.
• The size of the PDF.
• The sign, indicating if the PDF is a signed value.
• The storage type, or how the PDF value is stored.
• The IPC characteristics, provided in the following three columns:
• Pass—the extent to which the PDF value is passed to other processes.
• Rec—the extent to which the PDF value is received by other processes.
• Share—the extent to which the PDF value is shared with parent processes.

The following abbreviations are used to describe the IPC Characteristics:

• sub —communicated with subprocess invocations.
• manual—must be manually communicated with statements.
• prohib—communication is prohibited.
• rcv—communicated with any fully or partially receptive process.
• rel/sub—communicated with all subprocess and related invocations.
• all—communicated with all invocations regardless of the receptivity level.
• Modifiable?—tells whether the PDF value can be changed with statements.
• Initial value—(how the PDF is initialized). When this column contains an asterisk (*), the PDF initial value is controlled by values entered in system administration or at runtime by a user.