Known differences between jVi and Vim
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Applicable vim documentation is provided. Most things that do not apply have
been removed from this documentation. It still needs further cleanup, but it
does provide a good description of implemented commands and operation.

Check the file NORMAL_COMMANDS for a complete list of vim normal mode
commands. Each command is marked as "works", "not yet" or "not planned".  Over
100 normal mode commands are implemented.

Only a few ":" commands are implemented.

Upper case marks are not implemented.

A mouse click will stop input mode. Otherwise the mouse does not participate
in commands. Selections, i.e. highlighted text, are not used in any way.

The vim 'cpoptions' "u", do vi compatible single level undo, is not
supported. The u (undo) and Ctlr-R (redo) are always multi-level.

Vim's extensions to the "z" command are not implemented.
Only z<CR>, z. and z- are available.