In this article Here you can find very examples of extensions:Document based Extension ExampleFor more information see Document based Extensions Documentation Single File Based Extension ExampleFor more information see Single File Extension Documentation Package Extension ExampleFor more information see Package & Project Documentation Printer-friendly version Table of contents Document Based Extension Single File Extension Package Extension Book traversal links for How to Create Your First Banana Accounting Extensions ‹ Extensions for Banana Accounting+ Up Document Based Extension ›