This will probably seem to obvious to mention to many, but it took me a few years to realise that you could replicate the "BREAK XYZ" from languages of yesteryear:

   FOR I = 1 TO 10
       FOR J = 1 TO 10
           FOR K = 1 TO 10
               DOSOMETHING I, J, K
               REM Breaks out of the middle loop, continues next I iteration
               IF SOMECONDITION(I, J, K) THEN BREAK J
           NEXT K
       NEXT J
   NEXT I

in modern languages by refactoring the loop you want to break out of into a function and using return instead:

   def inner_loops(i):
       for j in range(10):
           for k in range(10):
               do_something(i, j, k)
               if some_condition(i, j, k):
                   return
   
   def fn():
       for i in range(10):
           inner_loops(i)