It’s kind of interesting to note that Adobe predates the Mac. An interesting bit of Adobe pre-history was that Donald Knuth used a pre-release version of PhotoS

It’s kind of interesting to note that Adobe predates the Mac. An interesting bit of Adobe pre-history was that Donald Knuth used a pre-release version of PhotoShop at Adobe headquarters when he was putting together his book 3:16. He had it running on multiple Macs each processing a different scanned calligraphic rendering of a verse because the size of the image files was such that processing was painfully slow. One interesting bit was on one of the scans, he changed a line break to more accurately reflect the sense of the text that was rendered. After the first edition went to press, he discovered that the calligrapher had rendered a Russian cross in the negative space¹ and his modification had obliterated this. Later editions made some other changes to line breaks to restore the Russian cross. ⸻ 1. This account is from my potentially inaccurate recollection of Knuth’s talk at the 1994 ATypI conference in San Francisco. It might have been a cross of Lorraine and it might have been the words that formed the cross and not the negative space.