[Dr. Geo] [Bug 1796662] Re: Documentation conceptual index: zoom factor for canvas

[hilaire]

** Changed in: drgeo
    Milestone: 19.03 => None

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Title:
  Documentation conceptual index: zoom factor for canvas

Status in Dr. Geo II:
  Incomplete

Bug description:
  The answer to the question:

      How do I control the zoom factor of the display of a sketch?

  is not easily found in the documentation.

  A solution is to update the  conceptual index.

  The method index has a reference to a method #scale:

  https://www.gnu.org/software/dr-
  geo/doc/en/Index.html#Index_fn_letter-S

  This leads to
  
https://www.gnu.org/software/dr-geo/doc/en/Smalltalk-sketch.html#index-scale_003a-on-DrGeoCanvas
  Method on DrGeoCanvas: scale: anInteger

  
  An example in the documentation which illustrates how the scaling works would 
also be useful.

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