If you require a stackup with specified distance between inner layers, or that has special material requirements, or the PCB is flexible, flex-rigid or metal-based, then a detailed stackup drawing must be supplied.

IPC-D-365 test pad file: Include this file if your system can generate a test pad file in IPC-D-356 format.

Gerber Job file: Include this file if your system can generate a Gerber Job file in .gbrjob format.