basestring$ = "The five boxing wizards jump quickly"
      n% = 10
      m% = 5

      REM starting from n characters in and of m length:
      substring$ = MID$(basestring$, n%, m%)
      PRINT substring$

      REM starting from n characters in, up to the end of the string:
      substring$ = MID$(basestring$, n%)
      PRINT substring$

      REM whole string minus last character:
      substring$ = LEFT$(basestring$)
      PRINT substring$

      REM starting from a known character within the string and of m length:
      char$ = "w"
      substring$ = MID$(basestring$, INSTR(basestring$, char$), m%)
      PRINT substring$

      REM starting from a known substring within the string and of m length:
      find$ = "iz"
      substring$ = MID$(basestring$, INSTR(basestring$, find$), m%)
      PRINT substring$