test file for spiff.
there is a word added here.
there is a         word in this line.
there is a word that is altered here.
no difference on this line due to white space.

default absolute tolerance should be .0000000001   
no difference --> 0.0000000001  different --> 0.00000000011
default relative tolerance should be 1.0e-10   
no difference --> 10.000000001  different --> 10.0000000011