Hello employee of the aperture company,
This is the operating instructions for the modules.
To start, turn on the module by clicking on its eye,
after turning it on, you have two choices
1 Leave it for a while before determining its purpose
2 Install it on GLaDOS for further verification.
That 's all, be careful of the modules , as they are very fragile and expensive , but not more expensive than a portal gun . Good luck