Tutorial : adding new flags & using them

[skwasjer]

Originally Posted by Mikhayl

It is very important to save the file with the "authorinfo", "start" etc chunks, otherwise S3D can import that file in another .dat like we did above, but it will not be able to open it in a separate window.

What do you mean? That you can't open a .dat file without those chunks? Try it, and you see you can

The authorinfo, start, end, index, eof chunks are not required chunks, but they are useful for the game to optimize loading. But S3D doesn't care if they are there or not. Remember, most .sim/.zon files etc, don't have those chunks either and their file format is identical to .dat.