The following tables provide a brief summary of deviceparameters for terminals, grouped into related areas. For more detailed information, refer to the sections following the OPEN, USE, and CLOSE commands.
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Error Processing Device parameters |
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DEVICE PARAMETER |
COMMAND |
COMMENT |
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EXCEPTION=expr |
O/U/C |
Controls device-specific error handling. |
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Interaction Management Device parameters |
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DEVICE PARAMETER |
COMMAND |
COMMENT |
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[NO]CENABLE |
U |
Controls whether <CTRL-C> on $PRINCIPAL causes GT.M to go to direct mode. |
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CTRAP=expr |
U |
Controls vectoring on trapped <CTRL> characters. |
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[NO]EDITING |
U |
Controls VMS line editing. |
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[NO]ESCAPE |
U |
Controls escape sequence processing. |
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FIELD=intexpr |
U |
Controls input buffer size. |
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[NO]INSERT |
U |
Controls insert or overstrike on input. |
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OVERSTRIKE |
U |
Synonym for NOINSERT |
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[NO]PASTHRU |
U |
Controls VMS interpretation of special control characters (for example <CTRL-B>). |
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[NO]TERMINATOR[=expr] |
U |
Controls characters that end a READ |
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Flow Control Deviceparameters |
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DEVICEPARAMETER |
COMMAND |
COMMENT |
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[NO]CONVERT |
U |
Controls forcing input to uppercase. |
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[NO]FILTER[=expr] |
U |
Controls some $X, $Y maintenance. |
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FLUSH |
U |
Clears the typeahead buffer. |
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[NO]HOSTSYNC |
U |
Controls host's use of XON/XOFF. |
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[NO]READSYNC |
U |
Controls wrapping READs in XON/XOFF. |
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[NO]TTSYNC |
U |
Controls input response to XON/XOFF. |
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[NO]TYPEAHEAD |
U |
Controls unsolicited input handling. |
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Screen Management Deviceparameters |
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DEVICEPARAMETER |
COMMAND |
COMMENT |
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CLEARSCREEN |
U |
Clears from cursor to end-of-screen. |
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DOWNSCROLL |
U |
Moves display down one line. |
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[NO]ECHO |
U |
Controls the host echo of input. |
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ERASELINE |
U |
Clears from cursor to end-of-line. |
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LENGTH=intexpr |
U |
Controls maximum number of lines on a page ($Y). |
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UPSCROLL |
U |
Moves display up one line. |
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WIDTH=intexpr |
U |
Controls the maximum width of an output line ($X). |
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[NO]WRAP |
U |
Controls handling of output lines longer than the maximum width. |
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X=intexpr |
U |
Positions the cursor to column intexpr. |
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Y=intexpr |
U |
Positions the cursor to row intexpr. |
O: Applies to the OPEN command
U: Applies to the USE command
C: Applies to the CLOSE command