Touchè Kelvin, but the "Add Symbol" is only available in SolidWorks. Sometimes you need that degree symbol when you're bragging about the 70° & sunny February day to your family up north.
or while your in typing note mode type number and then after it <MOD-DEG> as shown in CAPITAL letters, the same can be done for diameter symbol <MOD-DIAM>
Hold down alt key and type 0176 on the number pad