# Appendices

### In this section

* [Naming conventions](https://help.qlik.com/talend/en-US/data-mapper-user-guide/8.0-R2024-04-and-earlier/naming-conventions)
* [Character encoding](https://help.qlik.com/talend/en-US/data-mapper-user-guide/8.0-R2024-04-and-earlier/character-encoding)
* [Old Eclipse-based runtime](https://help.qlik.com/talend/en-US/data-mapper-user-guide/8.0-R2024-04-and-earlier/old-eclipse-based-runtime)
* [Compatibility](https://help.qlik.com/talend/en-US/data-mapper-user-guide/8.0-R2024-04-and-earlier/compatibility)
* [Working with Java Objects](https://help.qlik.com/talend/en-US/data-mapper-user-guide/8.0-R2024-04-and-earlier/working-with-java-objects)
* [Specifying the Segments Release for IDocs](https://help.qlik.com/talend/en-US/data-mapper-user-guide/8.0-R2024-04-and-earlier/specifying-segments-release-for-idocs)