input: [Description] The ratio of the number of abstract classes (and interfaces) in the analyzed package to the total number of classes in the analyzed package. The range for this metric is 0 to 1, with A=0 indicating a completely concrete package and A=1 indicating a completely abstract package. [Term] 
output: Abstractness
options: N u m b e r o f C l a s s e s
options: A f f e r e n t C o u p l i n g s
options: E f f e r e n t C o u p l i n g s
options: A b s t r a c t n e s s
options: I n s t a b i l i t y
options: D i s t a n c e
options: C y c l e s