What is Key Word driven Testing?

Software test scripts are conventionally composed ad hoc by a coder. Some software development tools help automate testing by recording tests that are run allowing playback of the test routines. However an entire test routine is rarely if ever applicable to more than one release of one application. Data-driven testing adds some modularity by keeping test input and output values separate from the test procedure but the procedure itself is still in a monolithic script. Keyword-driven testing breaks the test procedure into logical components that can then be used repeatedly in the assembly of new test scripts.

What is the differance built in variables and User defined variables?
a function is a block of instructions that affects the data a script is handling. In a script you can use the functions that VBScript provides (i.e. built-in functions ) or you can create unique functions (i.e. user-defined functions).I analyze two popular built-in functions that let users provide input: MsgBox and InputBox. MsgBox displays a dialog box in which users can click buttons to provide input. InputBox displays a dialog box in which users can type text to provide input.