This editor is called by the command RED.
It is key-oriented, i.e., most of the functions (insert, delete, move) can be called by using special keys.
The particular assignment of these special keys is included in Appendix 2 - Keyboard Layouts.
Marking Text Areas
Before the functions can be executed, the corresponding text areas must be marked.
To execute functions that only refer to one line, position the cursor on the desired line and then press the function key.
To mark an area (e.g., several lines, rectangles), position the cursor at the beginning of the area and press the 
key. Then position the cursor at the end of the area and press the
desired function key.
If the cursor is only moved vertically, the total length of lines is marked.
If the cursor is also moved horizontally, a rectangle (block) is defined that is limited by these two marks.
Inserting Lines and Blocks
To insert single blank lines, position the cursor on the corresponding line and press the key 
.
To generate several blank lines from the cursor position, issue the command
n 
where n is the number of the desired blank lines.
If an area has been marked, a corresponding number of blank lines or a rectangle of blanks is inserted.
Deleting Lines and Blocks
To delete single lines, position the cursor on the corresponding line and press the key 
.
To delete several lines from the cursor position, issue the command
n 
where n is the number of lines to be deleted.
If an area has been marked, a corresponding number of lines or the rectangle is deleted.
The last deleted text is stored in a temporary buffer (PICK buffer).
To restore the last deleted text, press the 
key.
Copying Lines and Blocks
To copy the marked text area
write it to a temporary buffer (PICK buffer) by pressing the 
key.
Then copy this text to any place by pressing the 
key.
As the PICK buffer is preserved up to the next PICK command, its contents can be copied as often as desired.
Moving Lines and Blocks
To move text areas
delete them from one place by pressing the 
key.
Then restore them immediately afterwards to another place by pressing the 
key.