CDA CDI6241 Use And Maintenance page 19

Glass Guards
The upper basket racks come with a 'GlassGuard' feature. These
allow you to place wine glasses securely into the dishwasher and
help to prevent the glasses from causing or receiving damage. They
are simple to use and involve placing the stem of the glass into the
blue grooves along the outside edge of the racks. These are pictured
below:
Glass Guards
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