What is DLL files?

DLL - Dynamic Link Library

DLL refers to a type of file that is stored either locally or remotely and is a collection of commands and/or data which can be shared by different programs on the same platform.

Typical DLL files contain commands and/or data that are common to a certain task, for instance Windows has many DLL files built-in which other programs access and utilise. A common example of this is spool32.dll which is used for printing control within Windows 95/98 by other applications.