Not all asset file(type)s are copied to the output folder

Using Delphi 11.2 (Patch 1), TMS Web Core

When adding files to the project, some of them are copied to the output folder on compile, but not all.

Working: .wav, .png
Not working: .dok

Is this a bug or a feature? If a feature, then where can I find a list of handled file types?

Greetings, Meik Stoll

This is by design. The tooling takes by default all commonly used file-formats typically used in web applications but .dok is not among these.
To add these uncommon file format, add it under settings:

Thank you very much for the explanation!