Character Attributes; Command Syntax Modes - Data General Dasher D461 User Manual

Character Attributes
Every character position on the display screen has four display attributes
plus a protect attribute.
The display attributes are valuable for character highlighting. Each
character displayed on the screen can be underscored, dimmed, made to
blink, or displayed in reverse-video form independently of all other
characters. These four attributes can be applied in all combinations. A
special feature allows you to change with one command the display
attributes for all characters in the active window.
When on, the protect attribute prevents the destruction of a character
field by the keyboard operator using normal cursor-related commands.
The cursor will skip over protected characters on the screen so that
critical character fields (fixed information on a form, for example) are
preserved. You can delete protected text with the Erase Screen or Erase
Window commands, which are generally restricted to the host
computer's use.
Command Syntax Modes
The Data General D411 /D461 terminal otTers the choice of four modes
of command syntax operation: Data General 7-bit, Data General 8-bit,
ANSI 7 -bit, and ANSI 8-bit. These modes, along with other terminal
communication options, are selected via the Terminal Configuration
menu accessed by pressing the CMD and N/C keys simultaneously. The
terminal will be configured with default settings at the factory. These are
values that will be assigned automatically unless you make another
selection. Upon power-up or when the terminal goes on-line, the
terminal will default to DG 8-bit mode. See Chapter 2 for default values
for all the communication options and for details on setting these
parameters. Software switches override both the Data General! ANSI
setting and the 7- or 8-bit-mode setting so the command syntax mode
can be changed dynamically by the host system. This feature maintains
the terminal's compatibility with existing OS (Operating System)
support for Data General terminals wh!le allowing use of industry-
standard code sequences involving ANSI 3.4, 3.41, and 3.64
environments.
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