So, I have owned a few linguist software fonts for a few years now, and since then, I have never seen them (NewJerusalemU, SymbolGreekU, GraecaU) available as a choice for the Greek or Hebrew available fonts in Logos program settings (on a Mac). So, I never thought it was possible to access additional fonts as choices for those language settings in Logos. That is, until I installed GFS Porson the other day; upon going through the settings, I noticed that GFS Porson is available as an option for Greek Fonts in Logos. I'd like to know how is the software is designed to choose which fonts it will and will not make available as options in the program settings?