Transparency option

Transparent data includes programmed symbols, extended field attributes, and commands.

These unprintable characters might appear on the 3270 screen as hyphens or another representation for unprintable characters.

If IMS attempts to send transparent data to an IBM® 3270 terminal that is unable to receive the data, an error is returned to IMS, and the terminal is taken out of service. To restart the terminal, the master terminal operator must issue the /START command.

For LU 6.1, input is processed using the transparency option of basic edit if the primary resource name (PRN) in the function management header (FMH) contains a transaction. Otherwise, the data stream is only scanned for the transaction code and optional password. The remaining data is treated as transparent data.