Do you have any specific examples which do not compile for you?
Right out of the MicroCode Studio Help:
FOR B0 = 0 TO 5 ' Count from 0 to 5
LOOKUP B0,["Hello!"],B1 ' Get character number B0 from string to variable B1
SEROUT 0,N2400,[B1] ' Send character in B1 to Pin0 serially
NEXT B0 ' Do next character
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