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## Appendix A Hacking

This appendix covers some aspects where users can extend the functionality of Org.

- Hooks: Who to reach into Org's internals
- Add-on packages: Available extensions
- Adding hyperlink types: New custom link types
- Context-sensitive commands: How to add functionality to such commands
- Tables in arbitrary syntax: Orgtbl for LaTeX and other programs
- Dynamic blocks: Automatically filled blocks
- Special agenda views: Customized views
- Extracting agenda information: Postprocessing of agenda information
- Using the property API: Writing programs that use entry properties
- Using the mapping API: Mapping over all or selected entries