You can overscore text, underscore text, or insert a special character by including control information in the text string.
Use two percent signs (%%) to introduce each control sequence. You can use this control code with standard AutoCAD text fonts (SHX) and Adobe PostScript fonts.
A sample drawing, TrueType.dwg, showing each font is provided with the online sample drawings. To find the online sample drawings, click the Application button , and choose OpenSample FilesOnline Sample Files.
The following control codes are available.
Draws character number nnn where nnn is the decimal value for the Unicode character.
Draws circle diameter dimensioning symbol.
Draws degrees symbol.
Toggles strikethrough on and off.
Toggles overscoring on and off.
Draws plus/minus tolerance symbol.
Toggles underscoring on and off.
Draws a single percent sign.
You can use the euro symbol with SHX fonts and their TrueType equivalent fonts shipped with AutoCAD 2000 and later releases. If your keyboard does not contain a euro symbol, hold down the Alt key and enter 0128 on the numeric keypad.