An important concept to learn while in University is that computer files often need to be shared (with other students or with professors). Consequently, care needs to be taken when naming files. For example, if you hand in a file as part of a class assignment, problems arise if most students name their file Assignment1.pdf as this will become confusing for the professor.
When naming a document that other students or professors will see, please use a naming convention and stick to it. A proper naming convention includes the name of the project/assignment, date, and author’s name. Using the underscore symbol to separate each word or number ensures it is readable by all operating systems and programs. For example: Firstname_Lastname_assign1_May2009.pdf
More generally, it is always advisable to make sure the person you are sharing files with has the same version of software or can open the file type you are sending. A good rule to follow is never assume the person you are sending a file to has the same software or even the same version of the software you are using.