IntelliJ Platform SDK [docs](https://plugins.jetbrains.com/docs/intellij/) sources located on [GitHub](https://github.com/JetBrains/intellij-sdk-docs).
This directory contains activity or model diagrams sources, design docs.
### How to write diagram in PlantUML

Install [PlantUML integration](https://plugins.jetbrains.com/plugin/7017-plantuml-integration/) plugin to add PlantUML support to IntelliJ IDEA.

See [PlantUML](https://plantuml.com) docs.