There are three pages in the Image settings notebook.
Attributes - Sets the image size and bits per pixel. You may set any size in the fields and the program will stretch or squish the bitmap to the size desired. The bit per pixel settings are:
1 bit - 2 color (Black and white)
4 bit - 16 color
8 bit - 256 color
16 bit - 65k color
Grid - Overlays a grid on the canvas to aid in spacing things properly. Snap to grid will make all new work start and end on the gridlines.
Line styles - Allows the user to set a line type, line size, use arrow ends and set arrow sizes on all new lines.