Since it is possible to have more that one layer on a plane, it is necessary to indicate which layers on the plane are considered electrically connected if they are physically adjacent on the layout. The connect section is the place where this information is provided. Each line in this section contains two comma separated lists of layers. Each layer in one list is considered electrically connected to each layer in the other list if they are physically touching in the layout. Make sure that no white space is in each comma separated list as a white space is used to determine the end of one list and the beginning of the other.