The prefix-oriented editor version is called using the command XED.
The prefix commands are written to the area of the form marked by '===='.
Prefixes may be positioned either at the left or at the right margin of the input area by using the SWITCH command. The SWITCH command must be entered in the command line.
The prefix commands refer to single lines or blocks of lines of the edit form. Default for the block length n is 1.
In After this line, n new lines are inserted and initialized with blanks.
Dn Starting from this line, n lines are deleted.
DD Starting from this line, all lines are deleted up to the next line marked accordingly.
>n The contents of this line are moved n columns to the right.
>>n The contents of the lines from this one to the next one that is also marked with >> are moved n columns to the right.
<n The contents of this line are moved n columns to the left.
<<n The contents of the lines from this one to the next one that is also marked with << are moved n columns to the left.
"n this line is duplicated n times.
"" The series of lines from this one up to and including the next one that is also marked with "" are duplicated.
""n The series of lines from this one up to and including the next one that is also marked with "" is duplicated n times.
C This line is copied after the next line marked with F or before the next line marked with P.
CC The series of lines from this line up to and including the next one that is marked accordingly is copied after the line marked with F or before the line marked with P.
CCn The block of lines from this line up to and including the next onethat is marked with CC is copied n times after the line marked with F or before the line marked with P.
M Like C, but deleting the original line.
MM Like CC, but deleting the original lines.
Xn The next n lines are excluded from the display.
XX The series of lines from this line up to and including the next one that is similarly marked is excluded from the display.
Sn The next n excluded lines are displayed.
S-n The last n excluded lines are displayed.
/ The corresponding line is centered on the screen.
The commands (I, D, DD, C) can also be entered in lowercases.