GROFF_DIFF(7)          (9 September 2021)           GROFF_DIFF(7)

     NAME
          groff_diff - differences between GNU troff and classical
          troff

     DESCRIPTION
          This manual page describes the language differences between
          lipsis ....}f lipsis ....}f lipsis ....}f the GNU roff text
          processing system, and the classical roff formatter of the
          freely available Unix~7 of the 1970s, documented in the
          Troff User's Manual by Ossanna and lipsis ....}f lipsis
          ....}f lipsis ....}f This includes the roff language as well
          as the intermediate output format (troff output).

          Section [lq]See Also[rq] below gives pointers to both the
          classical roff and the modern groff documentation.

     GROFF LANGUAGE
          In this section, all additional features of groff compared
          to the classical Unix~7 troff are described in detail.

        Long names
          The names of number registers, fonts,
          strings/:macros/:diversions, special characters (glyphs),
          and colors can be of any length.  In escape sequences, addi-
          tionally to the classical [oq](,xx/[cq] construction for a
          two-character glyph name, you can use [oq][,xxx/][cq] for a
          name of arbitrary length.

          lipsis ....}f
               lipsis ....}f lipsis ....}f lipsis ....}f lipsis ....}f
               Print the special character (glyph) called lipsis
               ....}f lipsis ....}f lipsis ....}f

          .rm ]B
               lipsis ....}f

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