I am trying to import gerber files from the design files provided here
however, it seems that the drl files are recognized incorrectly by more than one software.
I tried both with Altium designer and gerbv. In both cases I get correctly imported the layers, the silk, paste etc. but not the drills.
See for example following image, drills are in the bottom left corner:
What is the exact format of the drl files? Units, digits, etc,?