{{man tip| 1=Changes to Rules are inconspicuous|2=New built-in Rules appear without any fanfare. Plus there a so many of them, grouped in so many subcategories that they may remain concealed.<br />Addons require downloading and installation, so the addon Rules have more visibility than the builtins. Plus they can be searched as a category in the Plugin Manager.}}

[[File:Preferences UpdateAddons-Rule-51.png|thumb|right|450px|Fig. {{#var:chapter}}.{{#vardefineecho:figure|{{#expr:{{#var:figure}}+1}}}} Preferences: Check for Updated Addons showing Rules]]

With the Release of Gramps version 5.1, the first addon Rules were released as [https://github.com/gramps-project/addons-source/tree/master/FilterRules examples of coding a Filter Rule addon]. [[{{Version manual}}_Addons#Installing_Addons_in_Gramps|Installing similarly to any other addon]], a New Rule appears as a menu item within [[Gramps_{{Version manual}}_Wiki_Manual_-_Filters#Add_Rule_dialog|Add Rule dialog]] while [[Gramps_{{Version manual}}_Wiki_Manual_-_Filters#Define_Filter_dialog|Defining a custom Filter]].