Common Gateway Interface (CGI) is a protocol for interfacing external applications to web servers. Prototyping is the best way to check interfacing against other hardware devices and hardware prototypes. Using functionality from native code libraries requires writing vapi files, defining the library interfacing. The challenge when different systems interact is in the relevant systems' interfacing and communicating. Adapter solutions are available for interfacing to other software packages and protocols. These enhancements could improve memory or allow more direct interfacing with computing devices. FastCGI is a binary protocol for interfacing interactive programs with a web server. LabVIEW includes extensive support for interfacing to devices, instruments, camera, and other devices. A pull-up resistor may be used when interfacing logic gates to inputs. However, it does retain video capabilities for interfacing with other instant messaging clients. The sensory system consists of approximately 900 sensors and their relevant interfacing units. This type of interfacing is known as "fusible" interfacing. The reuse of existing tracks and the interfacing with existing networks is limited. Three topologies for interfacing with an MTA are supported. Hobbyists, specifically home-built processor enthusiasts, often prefer SRAM due to the ease of interfacing.