qr// is used to create a string that looks like a regular expression. See perlop on Regexp Quote Like Operators.

In reply to Re^3: How to use FindWIndowLike to find a window like "SURFer++ note" under Win32::GuiTest module by Corion
in thread How to use FindWIndowLike to find a window like "SURFer++ note" under Win32::GuiTest module by ankit.tayal560

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