data lumps. This kind of a directory is called a "lumpassembly" and it can be used instead of a WAD file. Note that a lumpassembly can only be loaded via the autoload mechanism (bu... loaded manually).
By default the contents of a lumpassembly are loaded in alphabetical order. However, some k... e used to sort the lumps but are ignored when the lump names are determined. The length of the prefix ca... //01_//) and //LUMPNAME// becomes the name of the lump.
* You can put a WAD inside the assembly.