1. Consistency, redundancy, reading order, and calls to action
Owl lived at The Chestnuts, an old-world residence of great charm, which was grander than anybody else’s, or seemed so to Bear, because it had both a knocker and a bell-pull. Underneath the knocker there was a notice which said:
PLES RING IF AN RNSER IS REQIRD.
Underneath the bell-pull there was a notice which said:
PLEZ CNOKE IF AN RNSR IS NOT REQID.
These notices had been written by Christopher Robin, who was the only one in the forest who could spell; for Owl, wise though he was in many ways, able to read and write and spell his own name WOL, yet somehow went all to pieces over delicate words like MEASLES and BUTTEREDTOAST.
Winnie-the-Pooh read the two notices very carefully, first from left to right, and afterwards, in case he had missed some of it, from right to left. Then, to make quite sure, he knocked and pulled the knocker, and he pulled and knocked the bell-rope, and he called out in a very loud voice, “Owl! I require an answer! It’s Bear speaking.” And the door opened, and Owl looked out.
from A. A. Milne, Winnie-the-Pooh (1926). Drawing by E. H. Shepard