System information

SECTION TWO - FRONT PANEL OPERATION
another string using the F7 (Chang) command. And, in most cases, you can even undo your last
few changes with the F2 (Rest) restore line or F1 (UnDo) commands. These commands, and
many more, are described briefly in the following sections.
The first screen you will see when entering the text editor is the edit screen with the first 16 lines
of the program displayed. The main edit soft keys are located at the bottom of the screen.
Text may now be entered at the current cursor position.
Key Definitions
F1 (Block) Main-Prog-Text-Edit-Block
A block is any arbitrarily defined, contiguous unit of text. A block can be as small as a single
character or as large as an entire program. Mark a block by placing a begin-block marker at the
first character in the desired block and an end-block marker just beyond the last character. Once
marked, the block can be copied, moved, or deleted.
Although marked blocks are normally highlighted so you can see what you've marked, the block
may be hidden (or made visible) with the F5 (Hide) hide block command.
F1 (Begin) Marks the beginning of a block. The marker itself is not visible on the
screen, and the block becomes visible only when the end-block marker is
set.
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