 For the CircuitPython Parsec today, what I want to do is show how you can use the color of a coordinate in a bitmap like a pixel in order to make your own DIY, roll your own line drawing routines. What I'm going to do is, let's just uncomment this one line of code and save it. So this is a little procedure I made called Draw Horizontal Line. You can see there I'm feeding it an X position and a Y position to start, a length, a hundred in this case, a color for my color palette, and you can see I also have it sort of drawn dramatically by putting a little pause there. And I'll just add one more to that. So let's also draw in a vertical line. So these are the two procedures that I built, draw each line and draw a V line. And you can see them right here. Here's how they work. So first of all I'm using display IO and I'm using a bitmap that I have put inside of the display group. Then I have a little palette of colors here. When I call one of these two functions, we feed it X position, Y position, length, color, and the pause, which we'll default to zero. And then we loop through the range of the length. So in this case I was going a hundred times looping through this next section which says, hey bitmap, set this position on X and this position on Y to whatever color from our palette we have selected, and then pause if there's a pause called for there. What this does is change the palette value at that pixel which has the effect of drawing. Now you can see if we want to do some extra fancy stuff here we can make little line drawing procedures here. You can see I've got sort of my own version of a very old school looking video game level drawing on. So we've got a little ladder, we've got some ledges here drawing on. Now I'm going to change the color of the palette once I've drawn it on. So we've set down pixels and then you can see it blink white there on that one palette color and that's because that position doesn't really know what the color is, we can swap it out. That position really just knows what its palette index is. And so that is how you can roll your own horizontal and vertical line drawing using bitmap inside of display I.O. in Circuit Python. And that is your Circuit Python Parsec.