Hello
I run into the same problem, because there is no further doc.
The solution is to run a minimal local webserver and call "jscut.html" as startpage in your webbrowser
(to open only the "jscut.html" as local file in the webbrowser does not work for me)
this is a small script doing the job
(save it as "start.sh" in the "jscut_standalone" folder and make it executabe with
"chmod 755 start.sh")
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...notice the "&" it is important to start firefox
greetings
Raibisch