This version of WSCAD 5 provides symbols in two library variants. The first variant shows the symbols in libraries with the previous sorting and code letters (reference names). The second variant provides new division of the symbols and at the same time, code letters for the symbols in accordance with DIN 61346. This DIN (German Industrial Norm) has applied since 01.06.2003.
The best way to the symbol is certainly the Symbol Explorer, which starts with the menu item Schematic / Load symbol or with toolbar Schematic or with (Shift+F12).
Setting of the directory is carried out under Settings / Common Settings / Libraries IEC61346.