These PostScript fonts are mapped to the equivalent TrueType fonts in a font mapping file. Because later releases cannot display PostScript fonts, Autodesk has supplied TrueType font equivalents. In previous releases, you could display PostScript ® fonts in the drawing. This system variable uses a default font file pair: txt.shx and bigfont.shx. If you use a text style that uses an Asian Big Font, you can map it to another font using the FONTALT system variable. If you want to specify a different font, enter the alternate font file name by changing the FONTALT system variable. By default, the simplex.shx file is used. If your drawing specifies a font that is not currently on your system, the font designated as your alternate font is automatically substituted.
