all mandatory and most optional properties are already set according to data vendor requirements.
It is possible to modify propeties only after the symbol is [[<span style="color: red;">'''LINK'''</span> /101-01_SettingIndProp.html name="1"; Setting Properties#Editing_an_existing_symbol properties|already added]] to the symbol list.
In case the symbol was added [[<span style="color: red;">'''LINK'''</span> /101_Symbol_List.html name="1=11"; |manually]]