The matrix toolbar

From left to right:

• Scope selector:
  • Default is global scope: *. In global scope mode, rules apply to all web pages, except those which match a narrower scope.
  • Other scopes:
    • Domain-level scope.
      • Example: https://*.google.com. Rules at domain-level scope will apply to web pages which match the scope, including the scheme (https or http), except if for web pages which match an even narrower scope.
    • Site-level scope.
      • Example: https://www.facebook.com. Rules at site-level scope will apply to web pages which match exactly the name of the scope, including the scheme.
  • An example for the use of scopes: block facebook.com globally, but allow facebook.com when visiting https://www.facebook.com. This is useful to prevent those ubiquitous servers from tracking you, unless you explicitly visit them.
  • Another example: to enforce the use of a secure scheme for a web site. If you create a scope https://www.google.com along with specific rules, these rules will not apply if the visited web page is http://www.google.com.
• Padlock: for any changes to be permanent, you need to click the padlock.
  • All changes in the matrix are temporary by default. This applies to scope selection as well.
  • Don't be scared to experiment with whitelisting, blacklisting or graylisting. It's all temporary.
  • When you are satisfied with the state of the matrix, make the scope/rules permanent by clicking the padlock.
• Force a reload the web page.
  • The web page will reload if needed when you close the popup menu, but you can force a reload while the popup menu is opened in order to see the effects of your changes.
• Revert all rules.
  • Clicking this button will cause all temporary rules to be wiped out. Only the permanent rules will be active in the matrix.
• Last button is to bring up more options, which are explained below.