[ Ref. "Repairing Wrinkled Rolls"
 [ https://www.mmdigest.com/Archives/Digests/199702/1997.02.06.12.html  
 [ and https://www.mmdigest.com/Archives/KWIC/W/wrinkled.html 

> Paper buckles, not when moistened, but when the moistened area has
> dried again. Why? It's as though moistening the paper releases
> internal forces, allowing the surface area to grow. Then it bulges
> slightly, and causes ciphers at the tracker bar.

Define 'cipher', please.

Marc Goodman

 [ In the world of music 'cipher' is a pipe organ term. A better
 [ explanation of the _effect_ of buckled paper is that air leaking
 [ beneath a wrinkled piano roll causes extraneous notes to play.
 [
 [ Found at http://www.organbench.com/419797270/5296131/posting/ 
 [ "Cypher" (also spelled "cipher") is the term organ builders use to
 [ describe a "stuck note" -- the continuous sounding of a pipe after
 [ a manual or pedal key is released, a malfunction most often caused
 [ by dirt -- either in the primary valve or under the pipe."
 [
 [ The Dictionary of Musical Terms, 1923 edition, simply says,
 [ "A tone is said to 'cipher' on the organ when, owing to some
 [ derangement in the action, it persists in sounding."
 [
 [ The Cambridge English Dictionary defines 'cipher' as "A system of
 [ writing that prevents most people from understanding the message."
 [ Ref. https://dictionary.cambridge.org/us/dictionary/english/cipher 
 [
 [ Thus social forums (including, I suppose, Mechanical Music Digest)
 [ might be described as cliques communicating with ciphers!
 [
 [ -- Robbie