document io

R=rsc
DELTA=44  (30 added, 4 deleted, 10 changed)
OCL=25819
CL=25835
3 files changed
tree: 32be5f41a524519e1afc6f5cb35a863ab06974d7
  1. doc/
  2. include/
  3. lib/
  4. pkg/
  5. src/
  6. test/
  7. usr/