Unicode strings and control codes Name Control Codes Unicode Strings Degree (°) %%d U+00B0 Plus/Minus Tolerance (±) %%p U+00B1 Diameter ( ) %%c U+2205 Symbol Unicode String Text symbols and Unicode strings Name Almost equal U+2248 Angle U+2220 Boundary line U+E100 Centerline U+2104 Delta U+0394 Electrical phase U+0278 Flow line U+E101 Identity U+2261 Initial length U+E200 Monument line U+E102 Not equal U+2260 Ohm U+2126 Omega U+03A9 Plate/property line U+214A Unicode strings and control codes Name Control Codes Unicode Strings Subscript 2 U+2082 Squared U+00B2 Cubed U+00B3