+==========================================================================================+
|Keen 4-6 'terminator text' format:                                                        |
+==========================================================================================+

This is the text that displays after the 'Ready, press any key' screen at Keen startup.
It is composed of a monochrome bitmap that is scrolled across the screen and distorted
for special effects.

It is roughly RLE compressed 'PICT' format, where the raw data, since it is only two
types, is composed of numbers (x white pixels, y black, z white...' even though the
colors of some of the text is not black and white but black and not-black.)



-------------------------------------------------------------------------------
FILE STRUCTURE:
HEADER
POINTERS
...
..
.
RLE LINE
...
..
.
-------------------------------------------------------------------------------


-------------------------------------------------------------------------------
------------------------------------------------
HEADER:
0   2    Img height  Height of the image in pixels
2   2    Img width   Width of the image in pixels
4   2x   Line point  Pointers to line 1,2,3..etc of data. There will be [Img height] of
                     these, each 2 bytes long. The first pointer will  have the value
                     (2 * [Img height] + 4)
+2  ?    RLE data    RLE-WM compressed data
------------------------------------------------


------------------------------------------------
DATA: (Always compressed)
0   2    Black run   Number of black pixels to write
2   2    Not-blk rn  Number of not-black pixels to write
4   2    Black run....
...
..
.
?  2     End         $FF $FF; means 'end of row.
------------------------------------------------
-------------------------------------------------------------------------------


-------------------------------------------------------------------------------
COMPRESSION:

RLE-M is the compression used for monochrome bitmaps and some bit-level compression. Since
there is only two types of data it consists entirely of count words. Normally this works
on the bit level, but Keen uses it on the (Rather odd.) word level.

The data is broken into words (Two-bytes) that indicate a nuber of pixels, starting with
BLACK (So all terminator text's leftmost column must be black.) then not-black, then
black... All values, even zero are valid except $FF $FF which indicates the row end.
Rows CAN be stopped before or after the image width is reached, but this is NOT supposed
to happen and causes some... odd effects.
-------------------------------------------------------------------------------