Scheme doesn't check for missspeeled variable names???

[James B. Wilkinson]

I fat-fingered the keyboard on my laptop and got this:

flute-notes = {
  \override BreathingSigh.Y-offset = #2.6                      %% also tried 
#5.0 and some really big numbers; no effect
  7 bars of music in 4/4
}


AND I never got an error message. This seems to mean that Scheme has no checks 
for valid identifiers. I’m reminded of a program we had back in the early 
1970’s; it printed an alphabetized list of all the identifiers in a BASIC 
program. If you’d misspelled something it jumped right out at you. Something 
like that would have saved me about two hours tonight.

sigh (as it were)