doc edits. C++ rename. #95

Job	Run time
build-and-upload (linux-aarch64, ubuntu-24.04-arm, aarch64)	5m 23s
build-and-upload (linux-64, ubuntu-latest, x86_64)	7m 14s
build-and-upload (osx-arm64, macos-latest, arm64)	4m 51s
build-and-upload (osx-64, macos-13, x86_64)	11m 45s
	29m 13s

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