Morse code is made up of dots and dashes. How did telegraph operators keep from losing track of where one letter ended and another began?

Question

In the movies, morse code comes through so fast it’s hard to tell a dot from a dash. Hoe did they keep from getting lost?

In: 1001

Answer 1

My uncle was a Morse code operator in WWII. He told me he could send and receive at the same time.

Also during WWII there were Allied coders who could recognize the signature cadence of Nazi operators so they could tell when certain units had moved from one location to another.