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Clarify halo handles and fix typos #5

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hilaire merged 1 commit into from
Apr 12, 2026
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Clarify halo handles and fix typos #5

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15 changes: 9 additions & 6 deletions chapter-03/contents.texinfo
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Expand Up @@ -118,8 +118,11 @@ World or any other morph that accepts dropped morphs.
between grab and move with a menu entry in the World menu.

@item
@strong{resize.} On a text morph, it changes the area of the morph; on
more graphics-oriented morphs like the Clock example in @cuis{}, it scales
@strong{scale.} It maintains the @emph{shape} of the morph, but scales it (for example, you can double the size of the morph).

@item
@strong{resize.} On a BoxMorph, it changes the area and dimensions of the morph (try it); on
more graphics-oriented morphs like the Clock example (Sample09Clock) in @cuis{}, it scales
the morph.

@item
Expand Down Expand Up @@ -273,7 +276,7 @@ to introduce the @class{PlacedMorph} class, which offers these features.
@cindex morph @subentry scale
@cindex morph @subentry rotate

@subsection Morph You Can Move
@subsection A Morph You Can Move

@emph{...but not only.}

Expand Down Expand Up @@ -360,7 +363,7 @@ completely dependent on the underlying mathematical models.

The remaining classes of the kernel morph hierarchy add geometry and visual
properties. @class{BoxMorph} is the most important one; it is bounded by
a rectangular extent. It is the root of most sub-morphs used to construct
a rectangular extent. It is the root of most sub-morphs used to construct a
@acronym{GUI, Graphic User Interface}. Indeed, its elements are most often
bounded by a rectangular shape. It allows for significant optimization in
the rendering of the whole @cuis{} @acronym{GUI}.
Expand Down Expand Up @@ -401,7 +404,7 @@ BoxMorph new ::
@result{} 0@@0 corner: 50@@40.}

The returned object is a @class{Rectangle} instance. As with @class{Point}
instances, this is a fundamental architectural class when dealing with
instances, this is a fundamental architectural class when dealing with a
@acronym{GUI}.

Observe that you get the same local bounds even when positioning the morph:
Expand Down Expand Up @@ -457,6 +460,6 @@ require much explanation. @class{PasteUpMorph} and @class{WorldMorph} are rarely
used directly.

This brief dive into the Morph framework is now over; we hope it provided
enough background to foster your understanding when building
enough background to foster your understanding when building a
@acronym{GUI}. In another booklet, we will discuss the Morph
framework in more detail.
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