Xerox 4635 User Interface Reference page 166

GLOSSARY
GLOSSARY-12
mask 1. Selection of bits from a storage unit by using an instruction
that eliminates the other bits in the unit. 2. In accessing files, a
file name wildcard is used to reference one or more files with
similar file-id (identifier) syntax. 3. In Interpress, a wildcard
serves as a template, indicating the shape and position of an
object on a page.
master file File serving as a general reference point for a particular
application system. Provides information to be used by the
program. It is usually updated and maintained to reflect the
results of current or daily processing operations.
MB megabyte. Unit of one million bytes.
media Vehicles or devices by which information is stored or transmitted.
Classifications include source, input, and output.
medium Object or material on which data is stored, for example,
magnetic tape or floppy disk.
memory Space in a device where information is kept, or the ability of a
device to keep information until needed.
menu List of available functions, commands, and options.
merge Operation combining two or more files into one predetermined
order. For example, to merge two separate, alphabetically
ordered files of names would result in one large alphabetically
ordered file.
message Unit of information transmitted by one facility to another in a
form that the receiving facility can understand and act upon. The
standard message format consists of a header (containing
identifying and control information), followed by the actual
message content, followed by a trailer (indicating that the
message is completed).
MHz megahertz. 1. Unit of cycling speed (one million cycles per
second) for an electromagnetic wave (in particular, a radio wave).
2. Sending and receiving stations of a radio wave transmission
must be tuned in to the same unit of megahertz.
MICR Magnetic Ink Character Recognition. MICR allows a computer to
read characters printed in special metallic ink by scanning the
shapes of their magnetic fields. MICR fields are often imprinted
on bank checks before processing.
mode Manner in which an activity or process is carried out.
XEROX 4635 LASER PRINTING SYSTEM PC USER INTERFACE REFERENCE