https://grep.metacpan.org/search?qd=Tcl-pTk&source=metacpan&q=cascade

https://metacpan.org/dist/Tcl-pTk/source/lib/Tcl/pTk/demos/widtrib/npuz.pl#L133

In reply to Re^2: Cascading (pTk) widget won't cascade by Anonymous Monk
in thread Cascading (pTk) widget won't cascade by Anonymous Monk

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