A construction machine that permits an exhaust gas after-treatment device to be disposed while avoiding an increase of height and hence avoiding narrowing of an operator’s visual field. A call can be received via an interface of the scripting language-based framework. Methods for the prediction of such a behavior for pre-buckling, buckling, and post-buckling conditions in wires, carbon nanotubes, and similar wire-grid-array structures, for example are also disclosed. The first device and second device are each operable to bidirectionally communicate through an ultrasonic communication link comprising at least a portion of the body of the user. An error detector detects errors in the full decision output and generates a signal when the full decision output errors are detected.