6.3.2020 - ORB.Mod.txt updated. See ORB.ThisModule. Error in Import with alias corrected.
8.2.2020 - ORP.Mod.txt  correction suggested by A. Pirklbauer in ORP.Module (ORP.Import)
26.1.2020  change aborted
31.5.2019 - ORP.Mod.txt, ORG.Mod.txt updated in TypeTest
15.5.2019 - Floating-point rounding corrected
  update Texts.WriteReal  and  ORS.Number
20190301 - ORB.Mod.txt updated, see InType (variable last)
20290118 - Fonts.Mod.txt  cleanup and correction in Fonts.Load
20190117 - Oberon System updates:
  Dinsplay.Mod.txt   CopyPattern, now pattern width w <= 32 (not < 32)
  Modules.Mod.txt   at end of Load:  res >= 3  (not res = 3)
  Texts.Mod.txt:   IF T.notify # NIL THEN T.notify ...   in
    Insert, Delete and ChangeLooks
20190109 - Syntax change in Lola: Use "=" in (const and type) declarations;
  use ":=" in statements (like in Oberon)
  Update LSC.Mod.txt, RISC5.Lola.txt, RISC5a.Lola.txt, RISC5Top.Lola.txt, MouseP.Lola.txt, VID.Lola.txt
20190108 - Update Texts.Mod.txt (see Insert, Delete, ChangeLooks) and
  Modules.Mod.txt (Load)
20181201 - Update Texts.Mod.txt (Read), and ORB.Mod.txt (outType)
20180918 - Update Oberon compiler
  Compiler now consumes considerably less heap space -- ORS.Mod.txt
20180912 - Update Oberon compiler
  Type tests other than for pointers and record parameters detected as illegal.
  see ORP.TypeTest
  Reexport of objects from aliased modules fixed. See ORB.OutType.
  Updated files are ORP.Mod.txt, ORG.Mod.txt, ORB.Mod.txt
20180804 - Update RISC5 definition in Lola, according to changes on 2018 06 28
  RISC5.Lola   RISC5Top.Lola
20180720 - Update compiler: ORP.Mod.txt and ORG.Mod.txt
  Cash for base adr of global variables "curSB" has been removed from ORG.Mod.
  Removal of this optimization makes compiler simpler.
20180628 - Update of RISC5, see RISC5.Update.
  Cleanup; new feature: Interrupts. Instruction set unchanged.
  New source files: RISC5Top.v, RISC5.v, RISC5a.v, Registers.v
  (RISC5a is RISC5 without floating-point and without interrupt)
20170211 - TextFrames.Mod.txt   updated   (GetSelection)
20161116 - LeftShifter.v, RightShifter.v as new separate sub-modules, changed: RISC5.v
   also added LeftShifter.Lola, RightShifter.Lola, changed RISC5.Lola
20161003 - FPAdder corrected.  x = 0.0, y = 0.0,  x - y
20160918 - RISC5.v , RISC5.Lola    adr: offset with sign extension
   FPDivider.v  FP.Divider.Lola.txt     proper rounding
   ORP.Mod, ORG.Mod, ORB.Mod   "aesthetic" improvements
   LSC.Mod , LSV.Mod    corrections
20160808 - FPMultiplier.v  FPMultiplier.Lola.txt     correct rounding
20160704 - Display.Mod updated
    guard against w < 0 in Display.ReplConst
20160620 - System.Mod updated   (see procedure Clear)
20160601 - TextFrames.Mod.txt updated
     see TextFrames.Extend      WHILE ... & (curY >= botY) ...
20160508 - Oberon07.Report.pdf   see syntax of module  (";" removed)
      see ORP.Declarations   (OR (sym = ORB.return))
20160501 - Oberon07.Report.pdf   see defintion of Type
20160418 - corrections: ORP.Mod.txt  ORG.Mod.txt
20160410 - updates
  ORP.Mod.txt    see CompTypes
  ORG.Mod.txt    see StoreStruct
  Modules.Mod.txt    see Error()   (recompilation not needed)
  Graphics.Mod.txt
20160307 - compiler ORP updated
   ORP.Statsequence (assignment)
   ORP.CompTypes  (dyn arrays:  t1.len = -1)
20160304 - compiler updated
  comparison of Booleans re-restablished  (ORP.expression, ORG.IntRelation)
  assignment of arrays: lengths of source and destination must be equal   (ORP.CompTypes)