program to learn vim through an interactive tutorial course. The vim program changes its behavior to typed key strokes based on mode. Typing in key strokes to the buffer is mostly done in INSERT-mode and REPLACE-mode document with tex(1) after commenting lines 7 to 10 and adding ”\input manmac \proofmodefalse”. It’s strongly recommended to buy this book (and all other books from Donald E. Knuth) instead of using the online