It is essential to have a complete understanding of how the library is structured, for making a schematic with all the benefits that HydroSym has to offer (and to be able to use HydroMan as well). The library is sectioned into three parts: Components, Components+ and Symbols. For making schematics, it is possible to use components and symbols. It is highly recommended to use only components for schematics, because these files contain the information of a specific product. Therefore this tutorial mainly makes use of components. The information that is stored in components are: the manufacturer, product code, ordering code, specifications, dimensions and the symbol which will represent this component in a schematic. This shows that a symbol is a part of a component. This relationship is shown in the next figure.
So the component file stores the data of a certain product and the symbol is just a file with the coordinates of lines, arrows, dots, etc.. A symbol can be used in various components with the same function. The reason why you should mainly use components in schematics is because only then HydroSym is able to make a Bill Of Materials for you and is also able to attach all the datasheets of the components to the schematic. Another reason for the HydroMan users is that components contain information needed for the HydroMan export file. Only with this information the schematic can be exported.