Well you got a 64x64 graphic and want to display a cutout of it which is what size?
That it works with the height.pcx file has this reason:
- The cutout is smaller than the actual image file and thus you can display a small part of it and "scroll" over the image.

Here is the important quote from the workshop:
Quote:

Conclusion: When you create a window, you will only see a small part of the bitmap used for it. Change variable_x or variable_y (altitude in our script) and the long bitmap will be shifted along the x or y axis, displaying other parts of the bitmap on the screen. The size of the cutout window in pixels (the visible part of the bitmap) is given by size_x and size_y.


Using window you cannot make the cutout larger or smaller but only move its position about the background image (height.pcx for example)