it seems JSLOG.TXT logfile is forced to be generated, and it's written into current working directory.
have a method/parameter to disable or redirect logfile output might be good for non-developing/debugging script usage.
or at least output logfile to the same location of jsh.exe file by default, otherwise, JSLOG.TXT will be put to everywhere :)

for similar reason, the jSH OK stdio message might be opt-in to be suppressed. anyway, I noticed stopping script with Quit() can prevent it appearing, keep this 'feature' at least.