How to create a replace tool

Hi,

I need to have a global replace tool in my SF5 website. 
www.sitefinity.com/.../replacetool_-_globally_replace_everything_in_your_project_with_zero_efforts.aspx

In this link, they have mentioned to add <tools> section in web.config.
I don't know where in web.config I need to add this. Also, what all should be added here.
Can anyone please tell.
Thanks.

The 'tools' concept of v3.x was extremely awkward and doesn't really apply in v4/5

Instead, what you would likley be looking to implement is a custom backend page, onto which you install your UI and logic controls.

I have implemented such replace tool already - you can find it here -

Hi,
Thanks for the reply. I have a doubt.
After creating the ApplicationModule, anything needs to be added in web.config?
When the module is created an entry came in System.Config