The files we have today on the computer contain font programs. These programs can be interpreted in software to yield the needed fonts (= face-size combinations

The files we have today on the computer contain font programs. These programs can be interpreted in software to yield the needed fonts (= face-size combinations) on demand. Edited to add: But none of this changes the fact that Adobe Garamond and Garamond 3 and ITC Garamond are not the same typeface. If you wrote the original article, you should probably update it to fix this mistake before readers start getting the wrong idea.