Enable alternate macro mode, enabling:
One additional directive, LOCAL, is available. It is used to generate a string replacement for each of the name arguments, and replace any instances of name in each macro expansion. The replacement string is unique in the assembly, and different for each separate macro expansion. LOCAL allows you to write macros that define symbols, without fear of conflict between separate macro expansions.
You can write strings delimited in these other ways besides "string":
You can delimit strings with single-quote charaters.
You can delimit strings with matching angle brackets.
To include any single character literally in a string (even if the character would otherwise have some special meaning), you can prefix the character with ! (an exclamation mark). For example, you can write <4.3 !> 5.4!!> to get the literal text 4.3 > 5.4!.
You can write %expr to evaluate the expression expr and use the result as a string.