The following figures show this in action before and after each of three characters are drawn. In
all three figure, the small circle is the "cursor position". At first, there is nothing on the line.
The first character establishes the initial baseline, and is then drawn. The upper left corner of
the character is where the cursor was (as in the traditional model), but this will not remain
the case. Drawing the second character, which is larger than the first, requires moving the first
character down in order to get the baselines to align; during this time, the top of the line remains
the same. Again, the upper left of the second character is where the cursor was, but that is no
longer the case for the first character (which has moved down). The third character is smaller
than the second, so no moving of characters needs to be done. However, the character is drawn
to align the baselines, which in this case means the upper left is not where the cursor was. Nor
is the cursor at the upper right of the character as it was for the previous two characters. It is,
however, at the upper right of the collective line.