A method of drilling a gas or oil well consists of use of a water-based drilling fluids containing high molecular weight crosslinked polyacrylic acid as viscosifying agent. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. One of the storage locations may store a LRN-to-PRN mappings for a current speculative state, while the other storage locations may store LRN-to-PRN mappings for previous speculative states. Coverage of surface regions with both an SAM and a polymer overlayer provides a number of advantages, particularly with regard to surface masking during etching and the like. The operating mode is changed to a second operating mode of the wireless device in response to a determination that the change in the state of the wireless device indicates that the first operating mode should be changed. Such menus may be provided by receiving a request to browse a web site, obtaining the link structure andor content of the web site, and generating menu data reflecting the link structure andor other properties of the web site.