What is the .drt extension?

Factual Questions
1

It’s not listed on filex.com. Does anyone know what program opens it?

Thanks.

2

Various programs .

3

It’s for especially filthy porn.

4

File extension list.

Another one.

5

.DRT files

or:

A custom derating file is an ASCII text file with a .drt extension that contains smoke parameters and derating factors specific to your project"

Might not be what you are looking for. In what context did you see this particular extension?

6

I think I might have come across that extension on a music tab site . . .