GOSUB...RETURN - a control flow statement that branches to, and
                 returns from, a subroutine
Syntax
  GOSUB {linelabel1 | linenumber1}
  [statements]
  RETURN [linelabel2 | linenumber2]
 
  - linelabel1 or linenumber1 is the label of the first line of the
    subroutine
  - The optional linelabel2 or linenumber2, used on the RETURN statement
    that ends the subroutine, is a <DETAIL>
 
See Also  <RETURN>  <SUB>