On a slow internet connection this may take a moment. If this
message displays for "a long time", intialization may have
failed and the JavaScript console may contain clues as to why.
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ACHTUNG: this file requires a generated input list
file. Run "make batch" from this directory to generate it.
WARNING: if the WASMFS/OPFS layer crashes, this page may
become completely unresponsive and need to be closed and
reloaded to recover.