FCL: Framework Class Library --- Frame Class Library
Bcl: Base Class Library --- Basic Category Library
CIL: Common Intermediate Language --- General Intermediate Language
MSIL: Microsoft Intermediate Language --- Microsoft Intermediate Language
CLR: Common Language Runtime - - General Language Operation Layer
CTS: Common Type System --- General Type System
CLS: Common Language Specification --- General Language Specification
Just-in-Time
PE: Portable Executable --- Portable executable
Coff: Common Object File Format --- General Object File Format
IDL: Interface Definition Language --- Interface Definition Language
SOAP: Simple Object Access Protocol --- Simple Object Access Protocol
UDDI: Universal Description, Discovery, And Integration --- Unified Description, Discovery and Integration
WSDL: Web Services Description Language --- Web Services Description Language