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Glossary - U


4 A B C D E F G H I K L M N O P R S T V W X 

UMB or Upper Memory Block:  An XMS Upper Memory Block, whose address is 
above the end of base memory (normally, above 640K), but within the 1 
megabyte of memory that DOS can address directly. 
UNC or Universal Naming Convention:  A common method for accessing files 
on a network drive without using a "mapped" drive letter.  Names specified 
this way are called UNC names, and typically appear as 
\\server\volume\path\filename, where server is the name of the network 
server where the files reside, volume is the name of a disk volume on that 
server, and the path\filename portion is a directory name and file name. 

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