Character set and file format
The decoder used processes NC control data in ASCII format. NC control data can be generated using a programming system integrated in the operating system or in an editor.
The CNC processes the following characters:
| Characters = | letters | and/or | 
| 
 | digits | and/or | 
| 
 | special characters | and/or | 
| 
 | control characters | 
 | 
| letters | { A B C ... Z a b c ... z } | 
| numerals | { 1 2 3 ... 9 0 } | 
| special characters | { ! @ # $ % & * - + _ = ~ ( ) [ ] , ; : " < > / \ ? ' } | 
| Control character = HT | Horizontal tabulator TAB | 
| SP Space | SPACE | 
| CR Carriage Return | CARRIAGE RETURN | 
| LF Line Feed | LINE FEED | 
Restrictions with NC filenames
The following characters are not permitted for filenames:
| special characters | ( " ] # $ ; , | 
| control characters | TAB, CARRIAGE RETURN, LINE FEED |