Many people know that problem: You want to repair something on your own, open the defective object and by no stretch of the imagination have a clue which role each part of it has and how it all works together.

For these people we try to establish a platform, where experienced people can upload pictures of their projects (electrical or mechanical) and place marks on them to mark each part and explain what's its role and how it works. (For seeing and editing marks javascript is necessary.)

Everybody is able to see marks but for creating and editing them and uploading pictures you have to register/log in.

For the sake of clarity the pictures are classified into categories. They can be created by registered users, too.