What does the acronym KIS stand for and why is it important in graphic design?

The acronym KSI could refer to several things. In engineering, it means "kips per square inch", or thousands of pounds per square inch. In gaming, it stands for "Knowledge, Strength, Integrity". In road and safety statistics, it indicates the "Killed or Seriously Injured" count. In evaluations, could refer to "Key Success Indicator", an alternative form of "Key Performance Indicator". There are a number of companies and organizations that use the acronym as well.