Grade 2 Braille is a superset of grade 1 Braille. The only thing added are contractions for part and whole words, as well as some short forms for commonly-used words. They are too numerous to list here, but the next version of Brailler should include a complete list. For the time being, the only way to learn grade 2 contractions is by typing in grade 2 mode and watching what shows up in your document. Watch this space...
