How to delete a text box in powerpoint?

But when I hit delete, it deletes the last text character within the box, rather than the box itself. I also can't copy the box. When I select the box and hit command-C, I hear a little whish, signifying (I suppose) an disallowed action. The boxes in question are not part of a slide background. This problem does not occur with pictures. read more

You can change or remove a border from a text box or shape or add a fill or effect to a shape or text box. If you have drawn multiple text boxes, you can link them together so that text will flow from one box to another. Click one of the text boxes and then under Text Box Tools, on the Format tab, in the Text group, click Create Link. read more