A file is a block of arbitrary information and is a part of the "File System" on a Computer About the "file" Extern links : wikipedia.com/wiki/Computer_file
A "Hard disks", "Hard drive" HD is a container for the "File System" on Computer. Device for digital data About the ""Hard disks", "Hard drive" HD"
About the "Network" Extern links : ► wikipedia.com/wiki/Computer_network ► compnetworking.about.com Networking for Beginners - Dictionary of Network Terminology
Alpha compositing Alpha-Transparency is the process of combining an image with a background to create the appearance of partial transparency