The high price put the Lisa at the bottom of the price realm of technical workstations, but without much of a technical application library. Some features that some much more expensive competing systems included were such things as hardware graphics co-processors (which increased perceived system power by improving GUI snappiness) and higher-resolution portrait displays. Lisa's implementation of the requisite graphical interface paradigm was novel but many of the time associated UI snappiness with power, even if that was so simplistic as to miss the mark, in terms of overall productivity. The mouse, for example, was dismissed by many critics of the time as being a toy, and mouse-driven machines as being unserious. Of course, the mouse would go on to displace the pure-CLI design for the vast majority of users. The largest Lisa customer was NASA, which used LisaProject for project management. Lisa was not slowed purely by having a 5 MHz CPU (the lowest clock offered by Motorola), sophisticated parity RAM, a slow hard disk interface (for the ProFile), and the lack of a graphics co-processor (which would have increased cost). It also had its software mainly coded in Pascal, was designed to multitask, and had advanced features like the clipboard for pasting data between programs. This sophistication came at the price of snappiness although it added to productivity. The OS even had "soft power", remembering what was open and where desktop items were positioned. Many such features are taken for granted today but were not available on typical consumer systems.