update: The docs are wrong.

I did not expect it either, and I haven't tested it, but this is from Tk::place (emphasis mine):

$slave->place?(-option=>value?, -option=>value, ...?)? The place method arranges for the placer to manage the geometry of $slave. The remaining arguments consist of one or more -option=>value pairs that specify the way in which $slave's geome- try is managed. If the placer is already managing $slave, then the -option=>value pairs modify the configuration for $slave. The place method returns an empty string as result.
"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re^3: Calling a TK Method by reference by Joost
in thread Calling a TK Method by reference by Popcorn Dave

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