String variables

String variables are stored internally as Dynamic Strings. Dynamic strings contain a variable-length string that can be up to approximately 2 billion characters in length.

There are also fixed-len strings or fixed-len ASCIIZ strings. In this case the size of the allocated buffer is fixed when variable is declared and not dynamic based on variable content.

The following string data types are supported:

Data type	Bytes	More ....
STRING	4	Plus the size of the string (up to 2Gb)
ASCIIZ	4	Plus the size of the string (up to 2Gb) plus 1, the $NUL char
Fixed-len STRING		The fixed size is declared in DIM statement using: Dim MyVar As STRING * SIZE where size is the size in bytes of the fixed string.
Fixed-len ASCIIZ		The fixed size is declared in DIM statement using: Dim MyVar As ASCIIZ * SIZE where size is the size in bytes of the fixed string.