Curtains are also used for privacy and security. They act as a functional covering for an enclosement or a room. Come to think of it: Curtains are used inside the bathroom, curtains are also used in private bedrooms, curtains are also used in the kitchen. For most people privacy is a primordial concern. Curtains prevent other people from peeking right into your personal space.
Your question above seems to be somewhat vague, but would like to see. if we can flush that out a bit. A solution document may be a. Solution Engineering, Solution Architecture, Solution. Integration, Technical Solution, Solution Design, or Solution. Build document.
A solution is a homogenous mixture of two or more substances that exist in a single phase. There are two main parts to any solution. The solute is the component of a solution that is dissolved in the solvent; it is usually present in a smaller amount than the solvent. The solvent is the component into which the solute is dissolved, and it is usually present in greater concentration. For example, in a solution of salt water, salt is the solute and water is the solvent. In solutions where water is the solvent, the solution is referred to as an aqueous solution. A solution does not have to involve liquids. For instance, air is a solution that consists of nitrogen, oxygen, carbon dioxide, and other trace gases, and solder is a solution of lead and tin.