I did not make the tool and I did not write the documentation so that would be directed to Wiimm anyways. I'm just trying to help people and explain why things are how they are.
Looking at this, which is the main page for WIT:
https://wit.wiimm.de/wit/
At the very very top it says the following:
- All commands accept all known Wii ISO file formats as input. If the source is a directory, all ISO images of that directory are used as source. Use the option --recurse and --rdepth to search whole directory trees.
- »wit COPY« will copy ISO images. The destination file names are set with format strings. WiiTDB is used to find locale disc names.
Converting from/to ISO, WDF, WIA, CISO, WBFS, GCZ and FST is done on the fly. The source file format is detected automatically and split source files are joined together. Output files can be split controlled by the options --split and --split-size.
Reading this, you first know that A) all commands accept all the formats behind that link
And you know that B) "wit COPY" is used to copy and automatically convert between ISO, WDF, WIA, CISO, WBFS, GCZ and FST. And the very next sentence explains that you can use "--split" and "--split-size" to make it create a split image.
Then, clicking at "
wit COPY" brings you directly to the documentation of the COPY command, of which the very first sentence after the table of contents is the explaination that it is called with the parameters "wit copy source dest".
The only possible thing that could be missing would be to explain what "source" and "dest" are - but that is just the very same for every existing command line tool in the world - a file name in the current directory, or a full path to a file outside of the current directory.
Yes, there is no full example for idiots like "To do X, just copy this bunch of code without understanding what it does at all".
However, all your questions are basically answered in the very first sentence of the very first two pages of the documentation. That's not bad documentation. I'd say that is pretty good documentation.
The "guides" page is for complex stuff to use after you've understood the basics that are directly explained on the main page, like the copy command.