A term usually used to describe intellectual property which is intangible and consists of rights over expression and aesthetic aspects of ideas, i.e., trademarks, literary copyrights, etc. It is sometimes also used to describe IP transferred in an intangible form, for example microprocessor designs in RTL (Register Transfer Level) format. Some soft IP practitioners consider the term pejorative and belittling. The dividing line between hard and soft IP is difficult to define, software for example being a tricky area. See Hard IP.