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## Appendix A Hacking

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

• Hooks: |  | How to reach into Org’s internals
• Add-on packages: |  | Available extensions
• Adding hyperlink types: |  | New custom link types
• Adding export back-ends: |  | How to write new export back-ends
• 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
• Speeding up your agendas: |  | Tips on how to speed up your agendas
• Extracting agenda information: |  | Post-processing of agenda information
• Using the property API: |  | Writing programs that use entry properties
• Using the mapping API: |  | Mapping over all or selected entries