Rated 1 out of 5 stars

I installed this, but then all the info on what to do next disappeared. I cannot find the button '<' as suggested, on the button, either, So, unless I can get easy, (like you would tell a very old person!) instructions, I will not be using it, nor contributing to its development, Peter. I am sight challenged & need all the help I can get.

This review is for a previous version of the add-on (7.0). 

As always with software which is new to you, you start by playing around with it in an environment where it can't do any harm:

1) Just open a simple web page and try out all the panel buttons after reading their tool tips.
2) Load a page to which you would like to apply this extension and try to achieve the result you would like to see.
3) Try to save your settings so they are applied automatically.

You can always uninstall the extension to remove any changes you made, and then reinstall it for another test.