- clarified that composites are values created every time they are evaluated, removed corresponding TODO.
- clarified that composites are values created every time they
are evaluated, removed corresponding TODO.

R=r
DELTA=5  (3 added, 1 deleted, 1 changed)
OCL=17746
CL=17751
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go