Terminal Processing 5
Controlling output
• Passwords and responses to the $READINV function
• Backpage requests
• Null input lines
• Lines directly handled by a system interface (for example, the z/OS
SUBSET string)
• All but the first of a sequence of duplicate input lines (if a null input line is
entered between the duplicate input lines)
Retrieval example
For example, if the following input lines are entered:
LOGIN JON
<password>
TIME
V VERSION
(a null input line)
V VERSION
Two lines are available for retrieval:
V VERSION
TIME
Null input lines
In the following cases, the Retrieve PF key returns a null input line to the
terminal rather than performing the retrieve function:
• Passwords and responses to the $READINV function
• Responses to the end-of-page prompt
• Responses to certain indented error prompts (for example, INVALID
BACKPAGE REQUEST)
• All lines saved for retrieval are cleared if the RESET MODEL command is
used to change from MODEL 5 to some other value.
• The Retrieve PF key is not recognized if the input line entered is a line that
is directly handled by a system interface (for example, the CMS SUBSET
string).
Controlling output
Output on most terminals is displayed one line at a time. The format of terminal
output is controlled by the settings of several parameters. This section
discusses three of them:
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