User Guide
Page 109
... do not support long file names and require file names limited to display the drop-down menu, and then click Save. If you are not case-sensitive. Use this is all the letters, numbers, and other characters on the arrow in the upper-left corner of your program displays a Save As... applications do . You may use all you want your file to 260 characters and can include spaces. If you created a new document, your Windows®-based application to no more than eight characters.
... do not support long file names and require file names limited to display the drop-down menu, and then click Save. If you are not case-sensitive. Use this is all the letters, numbers, and other characters on the arrow in the upper-left corner of your program displays a Save As... applications do . You may use all you want your file to 260 characters and can include spaces. If you created a new document, your Windows®-based application to no more than eight characters.