Can I install a third-party software package on my 4200-SCS?

4200-SCS Technical Data Sheet lists many third party software packages that have been tested and approved for installation, including MS Excel, Word, and various anti-virus programs. Any 4200-SCS user that has access to the system administrative priviliges has the ability to install any third-party software on the 4200-SCS. However, Keithley cannot guarantee that this (un-tested) software will not affect the stability and operation of the instrument.