multiple window

[VARUNPARATWAR]

1. if i have 5 windows and all have same google main page on it, if i want to work on 2nd window (not 2nd tab) how to do it?
2. how to develop a function that will give last day of next month.(it should be dynamic)
3. how to delete entire coloum from collection includes header 
4. how to click button using surface automation whose position and colour keeps on changing.
5. how to launch and read from windows based application with different extension.

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VARUN PARATWAR
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