Topic: step-in, step-out , step-over

Step Into

Choose Debug > Step Into, click the Step Into button , or press F11 to run only the current line of the active test or function library. If the current line of the active test or function library calls another action or a function, the called action/function is displayed in the QuickTest window, and the test or function library pauses at the first line of the called action/function.

Step Out

Choose Debug > Step Out, click the Step Out button , or press Shift+F11 only after using Step Into to enter an action or a user-defined function. Step Out runs to the end of the called action or user-defined function, then returns to the calling test or function library and pauses the run session.

Step Over

Choose Debug > Step Over, click the Step Over button , or press F10 to run only the current step in the active test or function library. When the current step calls another action or a user-defined function, the called action or function is executed in its entirety, but the called action or function script is not displayed in the QuickTest window

step in :
it can be used to execute the current line of the script. if
the current line is function or method than it call the
function or method but it vl not run.

step out:
it can be used to execute the function or method which is
called step into mode

step over:
it can be used to execute the current line of the script. if
the current line is function or method than it call the
function or method and execute that function