This is MetaPost, version 1.504 (kpathsea version 6.1.0)  25 MAY 2012 09:41
**mpman-charts
(mpost.mp (/home/texlive/karl/Master/texmf-dist/metapost/base/plain.mp
Preloading the plain mem file, version 1.004)) (./mpman-charts.mp
(/home/texlive/karl/Master/texmf-dist/metapost/base/boxes.mp) (./charts.mp)
[1] [2] )
2 output files written: mpman-charts-1.mps .. mpman-charts-2.mps