A socket for electrical parts, which is mounted on a circuit board, comprises a socket body on which the electrical part is accommodated, and a plurality of contactors disposed on the socket body for establishing an electrical connection between the circuit board and the electrical part. The modified toggle link may also include a modified profile which defines a hump on an upper surface of the rearward link of the toggle link and a corresponding recess on the forward link. For the execution of these subtasks, services distributed over the network are available. An ASE duct may include first and second boundary surfaces joined at a vertex having an included angle that allows ASE reflected off on one boundary surface to be incident on the another boundary surface at less than the critical angle and transmitted outside of the ASE duct. A query may be conducted on the balanced binary tree to identify a node and the integer records list associated with the node is generated.