[ind]-- Restore left margin to normal, i.e. to the full width for pages in this document; equivalent to [ind0].
[rm] -- Restore right margin to normal, i.e. to the full width for pages in this document; equivalent to [rm0].
[rm0:0] -- Restore right margin to normal even after prior use of [linenum] or [rmN:O].
These codes are simply inserted in the text at the point at which you wish to restore either or both margins.