IDEAlink Curve Calibration using the G7 method involves comparing two NPDCs from the G7 Fangraph to calculate new aim values that will be given to the printer's RIP files. This can be a manual process, but the IDEAlink curve software, created by IDEAlliance, does this automatically and with minimal error. Improvements to this program include Curve2 and Curve3. IDEAlink Curve 1.1 software is no longer commercially available.[4] See the list below for systems and software that have received G7 System Certification.