I am very new to InDesign, a Quark user for more years than I can count. What fonts are required to be in the Fonts Folder inside the InDesign Folder? Right now there are 181 fonts, all OpenType. I tried deleting them but then InDesign would not load - put them back and everything is just fine. I use Font Reserve for my font collection but planning to change to Linotype Font Explorer X. I would really like to get the font list shorter by eliminating a bunch of fonts that will not be used in a document.