The rectangular translucent box that appears when you left-click and drag it around items is called the Selection box. It allows you to drag, and select multiple items on the desktop or any folder.
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How to make a DIY derpy valentine box

Learn how to make a DIY Derpy Valentine Box inspired by KPop Demon Hunters! A silly tiger classroom box that holds cards ...
Take flight! Make an airplane from a cardboard box for a simple and incredibly fun way to engage in imaginative play with your child. Cut a slit in two opposite sides of the box. Insert the rounded ...