Add a new level helps players get started with the editor. Click "Read more" to see instructions.
Unzip and put the file inside directory "scenarios" of your game.
Open a cmd or shell at game folder and paste the following then hit enter:
"PACKAGER.exe /u .\scenarios\editor_manual.bds /d .\scenarios\editor_manual_unpacked"
Or you can read a more detailed tutorial on official wiki: Ssbd.a000ff.com