Back when preprocessor optimization data was displayed on the preview
page, one could see the output of mw.log and mw.logObject calls in the
LUA code there. Right now, I can't find any place when I can do that
any longer. I know about the debug console, but that is populated only
when you introduce something there and it's almost impossible to
exactly reproduce the parameters generated by passing through 3
templates and 2 other module calls.
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