You can identify font types by viewing the properties of an individual font in C:\Windows\Fonts. A custom installation of Finale gives you the option of installing either the PostScript or TrueType fonts on your system.
While TrueType fonts suffice in almost every situation, some publishers require the use of the PostScript format. Noteman says: Many fonts included with Finale come with a Type 1 PostScript font and a TrueType font. Advanced configurations > Alternative music fonts Fonts
