A method of controlling connection between nodes in a digital interface whereby a first node that is a master node determines a second node to be the master and controls a point-to-point connection or a broadcast connection to another node. A user may designate content to be inserted into a document and have the system insert space to accommodate the new content. The requesting cache will not cache less than a full cache line, but may forward the received data to the processor supported by the requesting cache. The transparent photoresist is mainly used to satisfy the needed cell gap between two transparent substrates. The bottom frame also has four corners with roller tracks at each corner.