This command, when used with the .RESTORE command, maintains the
    formatting context of a document for the user. The files produced
    by the DSR utilities make changes to the formatting context. In
    order not to disturb the user's context, the .RNT and .RNX files
    execute .SAVE and .RESTORE commands.

    The .SAVE command stores information about the current RUNOFF
    formatting context; this includes DSR defaults and DSR commands
    and flags issued by the user.

    The .RESTORE command restores the formatting information saved
    by the last-issued .SAVE command. .SAVE/ .RESTORE pairs may be
    nested up to 10 pairs deep.

    Format

      .SAVE

    Abreviated format

      .SA