Compiler Options
| Switch | Result option |
| -wn | ( W N ) |
| -w-n | ( !W N ) |
| -wi/harbour/include/ | ( W I=/harbour/include/ ) |
| -wi/harbour/include/n | ( W I=/harbour/include/n ) |
| -wes0n | ( W ES=0 N ) |
| -wen | ( W [invalid switch: e] N ) |
| -wesn | ( W ES=default(0) N ) |
| -wses | ( W S ES=default(0) ) |
| -wess | ( W ES=default(0) S ) |
| - | ( [invalid switch] ) |
| -w-n-p | ( !W !N P ) |
| -w-n-p- | ( !W !N !P ) |
| -w- -w -w- | ( finally: !W ) |
| Switch | Result option |
| /w/n | ( W N ) |
| /wo/n | ( [invalid switch: wo] N ) |
| /ihello/world/ | ( I=hello [invalid switch: world] [invalid switch: /] ) |
| /i"hello/world/"/w | ( I=hello/world/ W ) |
| /ihello\world\ | ( I=hello\world\ ) |