Load a font into LameText.
txt.Load(source, start, w, h)
source- The address of the font sprite.
start- The first character in the sprite (usually " ").
w, h- Desired letter spacing.
This command returns no values.
Begin by loading a font into LameText with
the font address, first character, and character width and
height. Only one font can be loaded at a time, but fonts can
be switched at any time.
Changing the width and height of the font changes the spacing of letters. Setting to 0,0 will use the sprite frame size for spacing.