Auto build        AUTOx.DAT (Winplan), NAUTOx.DAT (hacked Winplan),
                    CHARTx.CC (PCC)
  Auto tasks        AUTOx.DAT (Winplan), NAUTOx.DAT (hacked Winplan),
                    SCRIPTx.CC (PCC2), VMx.CC (PCC)
  Base damage       BDATAx.DAT, BDATA.HST
  Base defense      BDATAx.DAT, BDATA.HST
  Base fighters     BDATAx.DAT, BDATA.HST
  Base mission      BDATAx.DAT, BDATA.HST
  Base storage      BDATAx.DAT, BDATA.HST
  Buildings         PDATAx.DAT, PDATA.HST
  Building costs    usually hardwired, PCONFIG.SRC (PHost 4.0k+)
  Building limits   usually computed
  Colonists         PDATAx.DAT, PDATA.HST
  Experience        UTILx.DAT (PHost), AUXDATA.HST (PHost)
  Friendly Code     PDATAx.DAT, PDATA.HST
  Happiness         PDATAx.DAT, PDATA.HST
  History data      CHARTx.CC (PCC), VPAx.DB (VPA)
  Homeworld Ids     REFDATA.HST
  Minerals          PDATAx.DAT, PDATA.HST
  Money             PDATAx.DAT, PDATA.HST
  Name              PLANET.NM
  Notepad           NOTESx.DAT (Winplan), CHARTx.CC (PCC)
  Natives           PDATAx.DAT, PDATA.HST, AUXDATA.HST (PHost: original
                    base natives used for cheat check)
  Owner             PDATAx.DAT, BDATAx.DAT, PDATA.HST, BDATA.HST
  Pictures          RESOURCE.PLN (image, formula)
  Position          XYPLAN.DAT, XYPLAN.HST
  Ship build order  BDATAx.DAT, BDATA.HST, AUXDATA.HST (PHost: build queue)
  Taxes             PDATAx.DAT, PDATA.HST
  Tech levels       BDATAx.DAT, BDATA.HST
  Temperature       PDATAx.DAT, PDATA.HST
This is a testing version.
It may be incomplete, and have more bugs (or features) than the public live version at planetscentral.com.