GLOBAL i
INPUT "Enter a number ( 1,2,3 ) ", i

ON i CALL  Sub_one, Sub_two, Sub_three
ON i GOSUB One, Two, Three
ON i GOTO Label_One, Label_Two, Label_Three

END       ' VERY necessary so we don't fall into the code below 

Label_One:
PRINT "Label One"
END

Label_Two:
PRINT "Label Two"
END

Label_Three:
PRINT "Label Three"
END

One:
PRINT "Subroutine One"
RETURN

Two:
PRINT "Subroutine Two"
RETURN

Three:
PRINT "Subroutine Three"
RETURN

SUB Sub_one
  PRINT "Sub One"
END SUB

SUB Sub_two
  PRINT "Sub Two"
END SUB

SUB Sub_three
  PRINT "Sub Three"
END SUB

Result:

Enter a number ( 1,2,3 ) 3
Sub Three
Subroutine Three
Label Three