Unlike a discovery situation, large-scale blackening, even without explanation, may be permitted: an agreement or order should not require a party wishing to challenge a designation to immediately submit an application as to why it is not protected. His advisers are his agents in the file and valid reasons must be necessary to exclude the client from the knowledge that his agents properly acquire on his behalf. However, this principle needs to be subject to a number of changes if trade secrets are to be protected from disclosure to potential competitors. In the case of a matter of a technical nature in a complaint that is the subject of the inspection or disclosure, parties seeking a discovery may require an inspection or disclosure to technical and professional consultants. . . .