Compilation Error Messages

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before begin need explain while skilled engineer complete noob @ writing sketches arduino
is there list of error messages returned on failed compilation in 1.0 ide?
in 'attempting' compile sketch playground dht11 test error message 'dht11' not refer type
n 'attempting' compile sketch adafruit (1.8" display) graphicstest.pde error message 'adafruit_st7735' not refer type.
what doing wrong?

doc

you not reading sticky post @ top of list. explained there.


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