OPTIONS (Command) Find:

You can also set the location of Alternate Font File by using the FONTALT system variable.
If you do not specify an alternate font, when you open a drawing containing fonts that cannot be located, a dialog box is displayed in which you specify a font to use for each missing font.
List of Options
The following options are displayed.
- Font Name
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Lists the font family name for all registered TrueType fonts and all SHX fonts in the Fonts folder.
- Font Style
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Specifies font character formatting, such as italic, bold, or regular. If the missing font is a Big Font, this option changes to Big Font and lists all available Asian-language Big Font files.