DSR, DSR Commands, .RIGHT MARGIN, Parameters
*Conan The Librarian
n Specifies the character position of the new right margin; n must be greater than the value for the left margin. (For example, .RIGHT MARGIN 60 sets the right margin just to the right of the 60th character position.) The maximum value of n is 150. +n Sets the right margin n character positions to the right of the current right margin. -n Sets the right margin n character positions to the left of the current right margin.