This command was added to be used as tool to accept a license agreement whenever needed. It will open a special tab where the user has the option to read the terms of the license and then press a button corresponding to his decision to agree or not with the displayed terms.
Here, TextFilename is the text file that will be displayed on the license window.
The use of License runs the command when the user agrees with the license conditions and Not,License will cause the command to run if the user doesn't agree.
This example will present the contents of myEula.txt - in case the user doesn't agree with this license the project build will be aborted.
If,Not,License,c:\myEULA.txt,halt,"User doesn't agree with license."