Copyright protection can be enhanced for anything written by attaching the copyright notice is referred as“copyright bug”. The bug-a “c” inside a circle-typically appears in the following form: © [First year of publication] [author or copyright owner]. Thus, the notice at the bottom of a magazine ad for Dell Inc.’s computers in 2009 would read 2009 Dell Inc. by placing this notice at the bottom of a document, an author (or company) can prevent someone from copying the work without permission and claiming that they did not know that the work was copyrighted. Substitutes from the copyright bug include the work ”Copyright” and the abbreviation “Copr”.