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Loops and Decision Structures
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 Loops and Decision Structures
 
 ■ The following keywords are used in Visual Basic for branching, looping,
   and decision structures:
 
   ◄DO...LOOP►      Repeats statements until or while given condition is true
   ◄END►            Stops Basic program, procedure or block
   ◄EXIT DO►        Provides alternative for exiting DO...LOOP loop
   ◄EXIT FOR►       Provides alternative for exiting FOR...NEXT loop
   ◄FOR...NEXT►     Repeats statements specified number of times
   ◄IF...END IF►    Conditionally executes/branches to different statements
   ◄IF TYPEOF►      Conditionally executes statements based on control type
   ◄IS►             Used in IF TYPEOF statements to test control type
   ◄GOSUB...RETURN► Branches to and returns from subroutine
   ◄GOTO►           Branches unconditionally to specified line
   ◄ON...GOSUB►     Branches to line depending on value of expression
   ◄ON...GOTO►      Branches to line depending on value of expression
   ◄SELECT CASE►    Conditionally executes different statements
   ◄STEP►           Specifies by what increment to increase counter
   ◄STOP►           Terminates program or suspends trapping of events
   ◄SYSTEM►         Closes open files and returns control to the system
   ◄UNTIL►          Used in DO...LOOP to execute until condition is true
   ◄WHILE...WEND►   Repeats statements given condition is true
 
 See: ◄Keywords by Task►