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4 Editing part programs
60
As the effect of backspace key the character before the cursor is deleted and the
characters behind step forward. Regarding logic lines (blocks) the same rearrangements are in
force as those referring to delete key .
Insert
When opening, the editor accepts insert mode indicated by caption INSERT on the right side
of the 18
th
line of screen.. After pressing key <INS> the caption and the mode change to
OVERWRITE. Afterwards by pressing key repeatedly the state changes to its reverse.
In insert state the new character is written in the position preceding the cursor. Regarding the
new word formed due to the insert the same rearrangements (word wrap) are in force as those
referring to deleting.
Select
Selection is implemented by the simultaneous pressing of key <SHIFT> and cursor
moving keys , , , . The selected text is shifted
one character right by means of keys and ,
one character left by means of keys and ,
one line down by means of keys and ,
one line up by means of keys and .
Selection is deleted with the help of cursor moving keys of the contrary direction.
Deleting the selected text
The selected text is deleted by means of key del .
Value range test
The editor does not make any sort of value range or other syntactic test.