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#### 9.25.3 Syntax

The assembly syntax is supposed to be upward compatible with that described in Sections 1.3 and 1.4 of ‘`The Art of Computer Programming, Volume 1`’. Draft versions of those chapters as well as other MMIX information is located at http://www-cs-faculty.stanford.edu/~knuth/mmix-news.html. Most code examples from the mmixal package located there should work unmodified when assembled and linked as single files, with a few noteworthy exceptions (see MMIX-mmixal).

Before an instruction is emitted, the current location is aligned to the next four-byte boundary. If a label is defined at the beginning of the line, its value will be the aligned value.

In addition to the traditional hex-prefix ‘`0x`’, a hexadecimal number can also be specified by the prefix character ‘`#`’.

After all operands to an MMIX instruction or directive have been specified, the rest of the line is ignored, treated as a comment.