unfortunately using the Symbols available from the Format Text Window will shift the line text down and one ends up with unevenly spaced line text because these symbols use a different font. To remedy this Autodesk
recommended to use Alt-0176 for Degrees, Alt-0177 for Plus/Minus, Alt-0216 for Diameter.Note you must use the numbers from the numeric keypad on the right side of the keyboard. Press and hold ALT key, type in the four numbers and then let go ALT key.