Wikipedia:Using the balanced editing restriction
The balanced editing restriction is designed to discourage single-purpose accounts at articles about the Arab-Israeli conflict by requiring editors to make no more than 1/3 of their edits in the article, article talk, draft, and draft talk spaces included in that topic in any given 30-day period. An edit made in violation is considered a topic-ban violation.
Tracking
PIA editing percentages can be tracked manually by dividing an editor's hits on Filter 1339 by their total edits to the four tracked namespaces. They can also be tracked with the tool n-ninety-five, which automates that process.
Technical requirements
For technical reasons, the balanced editing restriction requires the editor being topic-banned from discussing PIA except within article, article talk, draft, draft talk, and their own user and user talk spaces. This means they won't be able to participate in PIA-related discussions in Wikipedia space, such as at noticeboards or AfD.
Also for technical reasons, the restriction considers the number of edits, not the amount of added text. This is a feature rather than a bug, as while either type of measure could be gamed, in theory gaming to create multiple small edits could encourage small positive contributions, while gaming to add text would tend to encourage padding and discourage removal of unuseful content.