Although we refer to campus units by acronyms in speech and internal publications (such as DoIT for the Division of Information Technology), acronyms should not be used exclusively except for those commonly used both inside and outside the university community (NASA, FBI). If an acronym must be used, to eliminate confusion when using lesser-known acronyms, spell out the full name on the first mention, with the acronym in parentheses following. Acronyms are made plural by adding an s if there are no periods in the acronym (IOUs) and adding ’s if there are periods in the acronym (Ph.D.’s). See the Chicago Manual for more on the appropriate use of acronyms.