"Chinese characters are formed from unique combinations of
Chinese character strokes. A Chinese character stroke is a
brush stroke of traditional Chinese calligraphy formed as a
single unbroken line between the point where the brush
touches the paper and the point where the brush is lifted
from the paper. The word "stroke" as used hereafter in this
specification, means a chinese character stroke as defined
above, unless another meaning is indicated as for example
when discussing certain prior art documents wherein the word
"stroke" does not necessarily mean a Chinese character
stroke as defined above.
Each character stroke may be considered to fall into one of
a limited number of character stroke-type categories or
families of character strokes that have common
characteristics. The expression "character stroke-type
category" as used hereinafter in this specification, means a
category of Chinese character strokes as defined above.
Each of these categories of character stroke types is
characterized by the size and/or direction of the character
strokes in the category.
In the book "Reading and Writing Chinese" written by
Professor McNaughton (1979, Charles E. Tuttle, Japan) eight
of these character stroke-type categories are described in
four pairs of character stroke-type categories. However, a
greater or lesser number of character strokes-types can be
categorised depending on the definition chosen for each
category.
A distinguished (sic) feature in each category is the
direction in which each character stroke is commenced, or
the directions in which each character stroke is commenced
and then continued after a change in direction.
Fifty character strokes may be used to form the most complex
characters, although most characters can be defined with
between six and twenty-one character strokes. Each
character has a particular character stroke count number
associated with it, although the official character stroke
count number can vary from the actual character stroke count
number in a small number of cases."
(Emphasis supplied)