log messages on script error console

Hi,
I recently purchased the home security orb v7 and saw that this orb uses an update log that appears on the script error console during update with a nearly placed update object.
The group deeded orb as well as the undeeded update object produced messages about the update state on the script error console.
Unfortunately I wasn't able to find a lsl function to do the same. Or am I missing something? Because I think this knowledge should be public... I ask here if someone can provide this knowledge here.

You just have to use llSay(DEBUG_CHANNEL, "message";

Oh... I have really missed something. I didnt even thought of looking at the llSay command for this functionality. I had rather expected a dedicated command to produce output on the script error console... Many thanks.