This makes it possible to refer to entities defined in the source file, using the source names prefixed with $. For example, $v20 refers to the value by that name in the sources, even if it was renumbered to 'vx0' in the parsed file.
This makes it possible to refer to entities defined in the source file, using the source names prefixed with $. For example, $v20 refers to the value by that name in the sources, even if it was renumbered to 'vx0' in the parsed file.