Control File Format

The control file is a text file consisting of one or more control instructions, one to a line:

A line starting with a semicolon (;) is treated as a comment line and ignored.
Blank lines are ignored.
Each instruction line starts with a single character code (for example, F), possibly followed by a modifier (for example, +).
The code (plus optional modifier) can be followed by one or more fields separated by commas.
White space following the code character (plus optional modifier), or following a field delimiter comma is ignored.
The maximum line length is 256 characters.