Here's a modified Xyzzy Text panel 40 cols x 8 rows. The textures are in the root prim contents instead of UUID links to assets so it's portable in OS. I made the mesh stuff in blender so the script needed to be totally updated. If you resize you can adjust the scaling and stuff. That's tedious work and i don't have the time but you are welcome to do it if you want it smaller or larger. I'm leaving it this size. It should be full perm if not lemme know.
There's a script "Test" in root prim that shows you how to write text to the board. There is also an "inactive" script set color you can use to change all the color on the linked prims/faces. Normally you would do this once and deactivate/delete the script.
hop://hg.holoneon.com:80/Holoneon%20Welcome/44/155/39
Have fun!