Saving & Exporting
Saving Project
If the project is already attached to a folder on disk, going to File > Save or Ctrl+S will save the project to disk. To save the current project to another folder, go to File > Save As or Ctrl+Shift+S.
If the project is currently not saved to a folder on disk, File > Save and Ctrl+S will work the same as File > Save As and Ctrl+Shift+S and will prompt for a folder to save the project to.
Exporting Namespaces
Go to File > Export Namespaces and select the namespaces you want to export. You will then be prompted one by one for the path to save the files to.
To pla3.zip
A pla3.zip file consists of multiple pla3 files under the same namespace. It is similar to a namespace folder of pla3 files, just that it is conveniently compressed into one file for easy transport.
To pla2.json/pla2.msgpack
The older pla2 format stores all components of the same namespace in one file, and is generally in MessagePack format (although JSON is fully supported too).