Lexmark Printer manual Filenames, Filename Extensions

6-10 Memory

Device names are case sensitive. They must appear exactly as shown.

Each device (except the disk) has one synonym. For example, the flash memory can be referred to as %flash% or %flash1%. The name with the 1 is a unique identifier. This system allows for future expansion of multiple flash memory or disk devices. The disk device name provides for multiple physical units and multiple logical units. Thus, %disk1_0% indicates the first physical unit and the first (0) logical partition on the device. Currently, one physical device (for ROM, flash memory, and disk) is supported. The disk supports only the first (0) logical partition.

Filenames

Each file on a device has a unique name to identify the information contained within the file. The name may be up to 127 characters in length. All character codes from X'01' to X'FF' are valid (X'00' is not valid). Filenames are case sensitive: for example, %flash%myfile and %flash%MYFILE indicate different files on the flash memory.

Filename Extensions

By default, all files referenced when using the PostScript emulation file operators are given a .data extension. For example, if the following PostScript emulation command occurs,

(%flash%myfile) (w) file

the file myfile.data is opened on flash memory. The .data extension is added to:

•Enable the Print Directory feature to identify files as PostScript emulation data files.

•Ensure the integrity of files, such as resource collection files and demonstration files.

However, it is sometimes necessary to access files by their real name through PostScript emulation. For example, you may want to remove old versions of PCL language resource collection fonts (without formatting the entire device).

To do this, use the PostScript emulation setfilenameextend operator. This operator is in the statusdict dictionary.