Various black lines in document. How to get rid of.

[cryptogram]

I'm completing a form and some of the check boxes seem corrupted. How do I sort them out?

[Guessed]

These are floating shapes that have been added to your document.

You can get rid of them by going to the Home Tab and clicking the Select dropdown on the right hand end and choosing Select Objects. This changes the selection mode so you can then lasso those shapes (by clicking and dragging). Once they are selected, you can delete them.