How to build a mapping file tutorial Monday, Aug 8. 7pm MST, 9pm EST zoom.us/j/3035202024. I am looking for some target layouts to use. Send your background image and xlights_rgbeffects.xml files to email@example.com. I will choose one or two to use in the tutorial. We will cover how to create a mapping file that will get the most out of someone elses sequence. If you do not have icicles, snowflakes, floods you can still import those effects. See you all on Monday Night.