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(as.info)Comments

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Comments
========

   There are two ways of rendering comments to `as'.  In both cases the
comment is equivalent to one space.

   Anything from `/*' through the next `*/' is a comment.  This means
you may not nest these comments.

     /*
       The only way to include a newline ('\n') in a comment
       is to use this sort of comment.
     */
     
     /* This sort of comment does not nest. */

   Anything from the "line comment" character to the next newline is
considered a comment and is ignored.  The line comment character is `;'
for the AMD 29K family; `;' on the ARC; `@' on the ARM; `;' for the
H8/300 family; `!' for the H8/500 family; `;' for the HPPA; `#' on the
i386 and x86-64; `#' on the i960; `;' for the PDP-11; `;' for picoJava;
`;' for Motorola PowerPC; `!' for the Hitachi SH; `!' on the SPARC; `#'
on the m32r; `|' on the 680x0; `#' on the 68HC11 and 68HC12; `;' on the
M880x0; `#' on the Vax; `!' for the Z8000; `#' on the V850; see Note:
Machine Dependencies.

   On some machines there are two different line comment characters.
One character only begins a comment if it is the first non-whitespace
character on a line, while the other always begins a comment.

   The V850 assembler also supports a double dash as starting a comment
that extends to the end of the line.

   `--';

   To be compatible with past assemblers, lines that begin with `#'
have a special interpretation.  Following the `#' should be an absolute
expression (Note: Expressions): the logical line number of the _next_
line.  Then a string (Note: Strings.) is allowed: if present
it is a new logical file name.  The rest of the line, if any, should be
whitespace.

   If the first non-whitespace characters on the line are not numeric,
the line is ignored.  (Just like a comment.)

                               # This is an ordinary comment.
     # 42-6 "new_file_name"    # New logical file name
                               # This is logical line # 36.
   This feature is deprecated, and may disappear from future versions
of `as'.