So when purchasing fonts look for opentype format. Those letters are good as they mean Linotype Standard and that is an opentype font. Some foundries though change the name of their fonts when upgrading to opentype, and you may have seen ' LT Std'.

If the for example an opentype font has the same postscript name for a type 1 fonts that a file you pulled for archive, then the opentype will automatically swap. Makes this difficult to know if you can remove the old cut of the font and not have font reflow issues. Most font managers will have a column for this, even the free font book does, but you lose your font preview to see this. Your Truetype and Opentype fonts are pretty safe to use, expect for some of the free fonts that might not be coded well. I manually added the T1 and TT to our server, and will be removing the duplicate old T1 versions when I can get to that. With Extensis Universal Type Client look for the word postscript and a black lowercase a. Type 1 you can tell by the red lowercase a in Illustrator, well it used to be red in previous versions now white reversed. They would crash your applications when you went to print, and caused other issues. Type 3 fonts thankfully have almost been removed from existence as they used to be notably part of the basic 35 fonts that came with your OS, Laserwriter or certain type foundries in the mid 80s.

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