# Summary

* [Virtual world](virtualworld.md)
* [Krestiantvo SDK 2.0](sdk2/index.md)
	* [Changes](sdk2/changes.md)
	* [Old versions](sdk2/versions.md)
* [Krestianstvo SDK 1.0](sdk1/index.md)
* [For developer](developer.md)
* [Modules](modules.md)
* [Documentation](documentation.md)
	* [Video lessons SDK 1.0](videolessons.md)
* [Open Source License](license.md)