Based on the title of my inquiry, you can tell I am a new user to AutoCAD and presently enrolled in the CAD Certificate program at Purdue to learn the program properly. My question is when I am repeating an object such as a line or circle or any other command, I would like the option of hitting a single key, such as a function key, which will repeat the last command without having to resort to a toolbar repeatedly. Another application for this option would be the use of AutoCAD in measuring linear or square feet of space. Any help would be appreciated. Thank You, JAD.