There are 2 examples with BREAK and BREAK/CONTINUE with M0 in the loop, by pressing button 's' to continue, you can have a look at the debug notification.
Code:
#222 = 0
o100 WHILE [1]
M0
#222 = [#222 + 1]
(debug,Loop 222=#222)
o101 IF [#222 GE 7]
o100 BREAK
o101 ENDIF
o100 ENDWHILE
(debug,end Loop 222=#222)
#333 = 0
#334 = 0
o200 WHILE [#333 LT 19]
M0
#334 = [#334 + 1]
(debug,Loop 333=#333 334=#334)
o202 IF [#334 GE 16]
o200 BREAK
o202 ENDIF
o201 IF [#333 GE 10]
o200 CONTINUE
o201 ENDIF
#333 = [#333 + 1]
o200 ENDWHILE
(debug,end Loop 333=#333 334=#334)
M30
