What do you mean by shadow board's term?

In production and manufacturing industry tools play a very vital role. Shadow Boards are tools, supplies or equipment storage boards used in production, manufacturing, and service environments. The aim of the shadow board is to achieve an organized workplace where tools, supplies and equipment are stored in appropriate locations close to the work area or work stations. It provides the basis for standardization in the work place. They are a simple and inexpensive tool which provides tangible efficiencies and cost savings as well as intangible benefits.