Off Topic, but related to the above comments:
When I was doing my microbiology degree there was one girl who would always write shorhand for "organsims per millilitre" , which is usually "orgs/ml", as "organisms/ml". She, genuinly, did not understand why it caused such mirth.
Those were in the days when we all had to use pen and paper. If you needed to use a computer you had to submit punched cards to the computer operators.