Rocket 204 - ERASE and FLUSH Parameters; Model 204 Editors; Attention Interrupt Feature; Invoking the Attention Interrupts

Terminal Processing 11
Attention interrupt feature
ERASE and FLUSH parameters
The characters used for line-editing functions at a particular terminal can be
specified as the values of the ERASE and FLUSH parameters. The @ and #
characters are the default values of these parameters. Use of these parameters
depends on the setting of the EDIT parameter. The ERASE, FLUSH, and EDIT
parameters are introduced in Chapter 2 and are discussed in detail in the
Model 204 Parameter and Command Reference Manual.
Model 204 editors
Once the user has pressed the carriage return (or other character that signifies
the end of the input line), the line-editing characters no longer can be used for
the line just entered. The line can be corrected only by using the Model 204 full-
screen or line editor. For more information on Model 204 editors, refer to the
Model 204 Editing Guide.
Attention interrupt feature
The attention interrupt feature is used to abort the operation that is currently
being performed and to cancel any output that is being displayed. The specific
action taken by Model 204 depends upon the access method or system
interface that is being used and the operation that is currently being performed
at the terminal.
Invoking the attention interrupts
The attention interrupt feature can be invoked using any of the following keys
or commands:
Keys
ATTN
BREAK
PA1
Commands
The keys and commands available to a Model 204 user depend upon the
terminal and access method or system interface being used. Throughout this
manual, reference to the attention key implies the use of any of these keys or
commands.
Use this command... In these circumstances...
*CANCEL in first seven positions of a terminal input line
C Only at the pause point
K Only at the pause point