A vehicle door controlling apparatus comprises a connection locking mechanism between a swinging door and a sliding door for locking the two doors by connecting them to each other. The semiconductor device has a plurality of unit transistors Q, transistor formation regions 3a, 3b, and 3e each having a first number of the unit transistors Q, and transistor formation regions 3c and 3d each having a second number of the unit transistors Q. By controlling an external pressure a wider range of materials can be employed to construct system apparatus. The presently preferred ink markers contain a mixture of water, glycerine, ethyl alcohol, flavoring, and food dyes.