A method of mounting an electronic component on a substrate includes forming at least one trench in a surface of the substrate. The invention includes a method for adding both linear and hierarchical navigation to the electronic document, as well as a method for the generation and management of the appropriate navigational links. The corrected accommodation power calculation unit calculates an integrated value of the accommodation power and a correction coefficient. Herein described are recombinant cell lines which produce these modulatory proteins as heterologous membrane-bound products. The apparatus comprises a first unit for detecting that the fastener is open; a second unit for detecting that the clothing item is worn; and an alert mechanism for generating an alert signal when the first unit detects that the fastener is open and the second unit detects that the clothing item is worn. The program counter sensor has a logic unit that ascertains the address of an instruction which is to be executed next from data transferred via the data bus, and a comparator, which compares the ascertained address with a content of the program counter and triggers an alarm signal if there is any discrepancy.