# Plan: Additional rules 81–90 (ROADMAP)

**Source:** [ROADMAP.md — Additional rules](../../ROADMAP.md#additional-rules).  
**Note:** The Additional rules table currently has 69 rows. Plans 11–20 through 61–70 cover all 58 remaining rules (rows 11–68). This file (81–90) is **reserved for future expansion**: when new rules are added to the ROADMAP table, use this plan for the next batch of 10, using the same structure as [plan_additional_rules_1_through_10.md](plan_additional_rules_1_through_10.md).
