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##### 8.21.3.1 Special Characters

The characters ``*`' and ``#`' are line comment characters; each start a comment at the beginning of a line, but only at the beginning of a line. A ``#`' prefixes a hexadecimal number if found elsewhere on a line.

Two other characters, ``%`' and ``!`', each start a comment anywhere on the line. Thus you can't use the ``modulus`' and ``not`' operators in expressions normally associated with these two characters.

A ``;`' is a line separator, treated as a new-line, so separate instructions can be specified on a single line.