||In DOS a variable is simply a place holder for a piece of command line. At runtime a
variable is simply being substituted by its string content. That’s why the string content
can be a value, a command, partial value, a partial command or a mix of them. In case of
substituting a variable to a command, this command to be substituted can use variables
itself. This opens up a lot of space for creativity, e.g.:
See also string manipulation.
- Handling DOS code as data until execution
- Creation and execution of temporary DOS code on the fly