text: ah, found this on another note:
  "If your Q was to me: "1w e blk" means in my field jotting language Oneway East for the specific Block. In this the Dunno... part implies that I don't know how far the Oneway extends. If I don't know I don't want to guess (usually, unless there are other reason to do that). Changing even one block (at a time) to correct oneway is IMO better than nothing."