The version number is one of the following forms:
The version string is of the following form:
version number<space>vendor-specific information
Vendor-specific information is optional. Its and contents depend on the implementation.
The standard GLU contains a basic set of features and capabilities. If a company or group of companies wish to support other features, these may be included as extensions to the GLU. If name is GLU_EXTENSIONS, then gluGetString returns a space-separated list of names of supported GLU extensions. (Extension names never contain spaces.)
All strings are null-terminated.
gluGetString is an initialization routine. Calling it after a glNewList results in undefined behavior.
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