5.2.2   HDevelop Programs

.hdev  
This is the default file format for HDevelop programs. The “main” procedure and all local procedures. It stores programs in XML format and is suitable for revision control software.

.dev (Legacy)  
This is the default file format for HDevelop programs in HDevelop versions up to and including HALCON 9. It is not suitable for managing programs using revision control software. This format is required if you want to be able to load HDevelop programs in older versions of HDevelop. This format is now marked as legacy and its use is no longer recommended.