Documentation clarification and a few new testcases #2881

Job	Run time
Rocky Linux 9 x64 Clang gnustep-2.2	7m 50s
Windows x64 MSVC Clang gnustep-2.2	20m 28s
Ubuntu x64 Clang gnustep-2.2	5m 15s
Rocky Linux 8 x64 Clang gnustep-2.2	2m 41s
Windows x64 MinGW GCC	27m 0s
Windows x64 MinGW Clang gnustep-2.2	24m 18s
Ubuntu x64 GCC	4m 58s
Windows arm64 MSVC Clang gnustep-2.2	38m 4s
	2h 10m 34s

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