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FAT - File Allocation Table
FS/2 - FileStar/2
FTP - File Transfer Protocol
GPI - Graphical Programming Interface
HPFS - High Performance File System
IFS - Installable File System
JFS - Journal File System
LMB - Left Mouse Button
MLE - Multi-Line Edit control
MMB - Middle Mouse Button (3-button mouse)
RMB - Right Mouse Button