Acronyms and abbreviations

This clause is informative.
The following acronyms and abbreviations are used throughout this ECMA Standard.
BCL -Base Class Library, which provides types to represent the built-in data types of the CLI, simple file access, custom attributes, security attributes, string manipulation, formatting, streams, and collections.
CLI -Common Language Infrastructure
CLS -Common Language Specification
IEC -the International Electrotechnical Commission
IEEE -the Institute of Electrical and Electronics Engineers
ISO -the International Organization for Standardization
The name C# is pronounced "C Sharp".
The name C# is written as the LATIN CAPITAL LETTER C (U+0043) followed by the NUMBER SIGN # (U+000D).
End of informative text.