The specific patch creation and application needs can vary significantly from one organization to another. The patch and package files created by ActivePatch may have any file name or extension, depending on the requirements of the specific application. Package files also provide two types of application-specific metadata about the files being updated. The first type of metadata is called a Property, and refers to a string value that contains information about the package. Examples of package properties include the name of the company that produced the package, a contact e-mail address, and a URL specific to the product that is being updated by the package. The second type of metadata is called a Resource, and refers to an application-defined block of data. Unlike properties, package resources may be of any type of data and are specific to a given application. Resource data may consist of text strings or binary data such as images or icons.