sandbox features

what is sandbox?

[sumitghanty]

I am new to google adwords. I came to know that i can run my demo programs on google adword's sandbox feature.. i want to know - how can i use this google sandbox and from which link i can get to it.
thank u..
waiting for ur response.....

[admagix]

Sandbox is the google Keyword tool which used for keyword research, bid estimates, search volumes & finding negatives.

Here is the link for Google keyword external tool

[adwords.google.com...]

Also, you can find the same inside your adwords under Tools menu.