The window General consists of several tabs. "Struct. members" table describes structural members with a possibility to increase structural members at the begin/end ("Extra begin"/"Extra end" values):
![Concrete General window Structural members tab](/sites/knowledge-base/files/help-images/ConcreteGeneralStr_Members.png)
The window General consists of several tabs. "Struct. members" table describes structural members with a possibility to increase structural members at the begin/end ("Extra begin"/"Extra end" values):