String constants
The string constants can be used as operands to certain pseudo-ops, such as .rename, .byte, and .string pseudo-ops.
String constants differ from other types of constants in that they can be used only as operands to certain pseudo-ops, such as the .rename, .byte, or .string pseudo-ops.
The syntax of string constants consists of any number of characters
enclosed in "" (double quotation marks):
"any number of characters"
To use a " in a string constant, use double quotation marks twice.
For example:
"a double quote character is specified like this "" "