Library of electrical plants in 10 blocks. Captions of electric plant in 10 blocks. Library containing 10 electric blocks of various types. Symbols used in electric with 87 types. Library of electrical plants in 10 blocks. Architectural design of masonry, 1 of 2. Electrical project of masonry, 2 of 2. Blocks with sockets. Library with electricity symbology. Created elec- tronic symbols that would be part of the AutoCADŽ library.