Oberon's editor (a big inspiration for help/help and Acme) had folding. Has folding I should say, since it's still there.
------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T9c7d0310d2c83a3e-M3e67df086a2282e50e16976b Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
