There is no specific definition of what constitutes a IBM z/Virtual Storage Extended (IBM z/VSE) utility program today, but common usage includes only a few z/VSE-provided programs as utilities. The UNIX community, by contrast, considers many of the standard commands as utilities. This includes compilers, backup programs, filters, and many other types of programs. To the z/VSE community, these are applications or programs, not utilities. The difference is simply one of terminology, but it can be confusing to new z/VSE users.