Here is a list of all related documentation pages:

[detail level 12]

Code 12 Application Metadata
Code Pitfalls - Frequently made mistakes
Code Snippets
Environment Variables
Testing for provided features.
Notes on revisions
Code 12 Pattern Packages
▼Extending ZYpp: Plugins and Hooks
Commit plugin
System plugin
Repository Variables
Services
Solver - Vendor protection
Writing and tunning testcases
Libzypp and threads
User data as transaction id
Todo List
Deprecated List