The symbols that appear in an electronic schematic and in an electrical drawing, drawn to the standard: components, wiring and measurement, sensors, blocks, waveforms, the floor plan of an installation and the control panel. Each one has a card saying what it is and where you find it.
Standards: IEC 60617 (the one used in Argentina and Europe), ANSI/IEEE 315 where the American drawing differs, and IRAM 2010 (Argentine standard) and AEA 90364 (Argentine Electrotechnical Association wiring regulations) for installation drawings.