ObjectPascal Do Keyword Defines the start of some controlled action

1. for   Variable := Expression to Expression do Statement;   2. while Expression do Statement   3. try   Statements except on ExceptionClass do Statement; end;   4. with  Expression do Statement

Description The Do keyword is always a part of one of the shown 4 control types. It precedes the Statements section of the control action. Related commands Begin Keyword that starts a statement block End Keyword that terminates statement blocks Except Starts the error trapping clause of a Try statement For Starts a loop that executes a finite number of times Repeat Repeat statements until a ternmination condition is met Try Starts code that has error trapping While Repeat statements whilst a continuation condition is met With A means of simplifying references to structured variables		Example code : Show singles and block do statement blocks var   i : Integer; begin   // A for statement - the do keyword precedes a single statement   for i := 1 to 3 Do     WriteLn('For loop, i = '+IntToStr(i));   // A while statement - the do precedes a statement block   while i < 6 Do   begin     WriteLn('While loop, i = '+IntToStr(i));     Inc(i);   end; end; Show full unit code    For loop, i = 1    For loop, i = 2    For loop, i = 3    While loop, i = 4    While loop, i = 5