MTS Volume 4 - Terminals and Networks (3278)

MTS 4: Terminals and Networks in MTS
July 1988
arrows pointing in the appropriate direction. The cursor LEFT and RIGHT
keys, when used with the SHIFT key, will move the cursor two positions
left or right. The BACKSPACE key in the extreme upper-right corner of
the standard keyboard is labeled with a left arrow pointing to a
vertical bar. The BACKSPACE key will "backspace and blank" when not in
INSERT mode; that is, any character spaced over will be replaced by a
blank character. The use of the BACKSPACE key in INSERT mode is
explained later.
The line-based keys are the TAB, BACKTAB, HOME, and ZIP keys. The
BACKTAB key moves the cursor to the first position of the current line
(or the previous line, if the cursor is already in the first position of
the current line). The ZIP key moves the cursor to the first unoccupied
position of the current line (or the next line, if the cursor is just
past the last position). The HOME key moves the cursor to the first
character _________ position in the topmost line on the screen. When the HOME key
is pressed with the SHIFT key, the cursor is moved to the first
available position after the prefix in the last nonblank line on the
screen. If TAB stops are not set, the TAB key will position the cursor
to the first position of the next displayed line. If TAB stops are set
and TABbing is "enabled," the cursor will be positioned at the next TAB
stop to the right. When beyond the last stop, the cursor is moved to
the first position of the next displayed line.
Special ____________________ Editing Keys
A character can be deleted from the screen by pressing the DELETE key
located in the control pad or the DEL key (the SHIFTed left-arrow key)
in the standard keyboard. All characters to the right of the deleted
character are shifted left by one position. The character after the
deleted character is then in the cursor position.
A word can be deleted by pressing the DELETE key and the SHIFT key
together. If the cursor is at a nonblank character, the word containing
that character and one blank to the right of the word (if any) are
deleted. If the cursor is on a blank, only the blank is deleted.
Again, all characters to the right of the deleted ones are shifted to
the left. If an attempt is made to delete a character from a line that
is longer than the screen width, that line first will be moved down to
the last line of the screen (if it is not already there).
Characters can be inserted by pressing the INSERT key to enter
insertion mode (indicated by the light under the INSERT key). When in
insertion mode, each character typed is inserted before the character in
the cursor position. The cursor and the remainder of the line to its
right are displaced one position to the right. If the insertion reaches
the rightmost character position on the screen or if the line is longer
than the screen width, the line is moved down to the last line on the
screen (if it is not already there). The maximum line length is 255
characters minus the current prefix length. While the terminal is in
14 The Ontel Display Terminal