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the same way. Make up some grids (photocopy Figure 8-3 if you
wish) and get ready to be creative! (Just in case you are not feel-
ing creative, and to make our explanations
a little clearer, we'll
be using a picture of an automobile
as an example of a draft
download character. You can see how we've laid it out in Figure
8-4. Later in this chapter we'll use this character
to create a
small graph.)
1st
byte
2nd
byte
J
3rd
byte
i
i
8-3. Use this grid (or one similar
to it) to define your own
Figure
draft characters.
128
64
32
32
16
16
8 8
4 4
2 2
1 1
OL
16
8
4
?
ASCII code:
Left space:
Right space:
Data
1st:
2nd:
3rd:
4th:
5th:
6th:
7th:
8th:
9th:
You'll notice that Figure 8-3 includes
a lot of information
around the grid. Don't be intimidated;
we'll explain each item as
we come to it in our discussion of defining and actually printing
download characters.
n Rule 1: Dots cannot overlap
As you can see in Figure 8-4 our car has a nearly continuous
outline. But, you may ask, why not make it a really solid line and
print all the intermediate
dots, as shown in Figure 8-5? Because
the dots that straddle
the vertical
lines in the grid actually
overlap those inside the boxes. If we tried to print overlapping
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