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CAD tip CAD tip # 10668:

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A
The "root" sign has a unicode code 221a. So when writing your text, enter the root as \U+221A - e.g.:
\U+221A(a+b)

Make sure you are using a font containing the root sign (glyph, character) - such as ISOCP, Arial, Verdana...
ACADACLT
100% *CAD
3.1.2016    54106×  
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applies to: AutoCAD · AutoCAD LT ·

See also:
Tip 14384:Wrong encoding of XLS/CSV/TXT files exported from CAD. Wrong characters on command line.
Tip 14323:AutoCAD does not start, saved DWGs are sometimes corrupted, fatal error during export or copy, or missing NLS file.
Tip 14238:How to combine fractions and subscripts/superscripts in MText?
Tip 13843:Accented characters (umlauts) are incorrectly displayed in the material schedule on isometric drawing.
Tip 13796:PCF file generated from AutoCAD Plant 3D is not compatible with my application.
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