l>
<li><code>SplitView</code> relies on the undocumented <code>spaces</code> API, and the separate accessibility ui <code>axuielement</code>; which <em>must</em> both be installed for it to work; see https://github.com/asmagill/hs._asm.undocumented.spaces and https://github.com/asmagill/hs._asm.axuielement/,</li>
<li>This tool works by <em>simulating</em> the split-view user interface: a long green-button click followed by a 2nd window click.  This requires some time delays to work reliably.  If it is unrel