Ahhh, I see. You were speaking in general, right? - while I was speaking specifically of Win32::OLE.
in reply to Re^6: How do I print the page header/footer from an excel spreadsheet
in thread How di I print the page header/footer from an excel spreadsheet
With Win32::OLE, the hash syntax is documented and seems to be the preferred method of accessing a property. The properties are defined by the app's (in this case Excel) object model, not Win32::OLE, giving a well-defined interface for automation.