| 'LS'= | Colour for Line with Syntax Error | 
Sets numeric colour code used for syntax errors.
Valid colour options for program line number with syntax errors:
| 
 | 0 - Black | 4 - Blue | 
| 
 | 1 - Red | 5 - Magenta | 
| 
 | 2 - Green | 6 - Cyan | 
| 
 | 3 - Yellow | 7 - White | 
'LS'=1 (Red)