Described are various methods and apparatuses that provide for variants for multiple resource types and efficiently managing these resources by use of common variables and an organized file structure. In particular, a carrier gas is humidified such that the water vapor in the carrier gas in the sample chamber of the ESEM has a partial pressure equal to the saturated vapor pressure of water. The other cord end is provided with a stop knot so that it will not slip through its adjacent passage in the line adjusting retainer bar and a hook is slidably received on the cord in the loop section. The bundling in accordance with the present invention can advantageously be used when transmitting speech data over a High Speed Packet Access. The lighting unit is formed from at least one infrared laser diode. The system can also be programmed with error control software so as to avoid the re-occurrence of a query signal that matches more than one signal stored in the reference database.