|2.||fg/bg color (-1 for transparent text).
That is, alignment in respect to the text location given by x,y.
For example x,y will be center-of-text when using TEXT_CENTER
alignment for x,y scale
|4.||background tile. text is printed on tile-background
|5.||floating/non floating text.
for floating-text, background is retained when text is removed from BITMAP.
non floating text would leave a black rectangle.
|6.||text may be moved with set_pos.