[Oberon] SystemV - Viewer Scroll

Andreas Pirklbauer andreas_pirklbauer at yahoo.com
Fri Mar 15 09:43:02 CET 2019

   > Hi Andreas,
   > Thank you, looking into your code. I wish, however to understand the original first. 

Please carefully read chapter 5.3, starting at page 66 of


PS: When reading the code of TextFrames.Mod, it is helpful to visualize
the data structure that describes the currently displayed lines (F.trailer).


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