PrintBold
From ZDoom Wiki
void PrintBold(item(s));
Usage
This is exactly the same as Print, except all players will see the printed text on the screen instead of just the activator of the script. For a detailed description of the syntax, refer to Print.
Examples
This command is useful if you want a monster triggered script to print something to the screen. One way a monster can trigger a script is by setting it to their special. When they die, the script is run. This script takes one parameter, which is the TID of the monster which has this script.
script 99 (int monsterid)
{
Thing_SpawnNoFog(monsterid, T_REDSKULLKEY, 0, 0);
PrintBold(s:"The boss has been defeated!");
}
To clarify: set the monster TID to something unique, and the special to 80 (ACS_Execute). Set the parameters to (99, 0, monster's TID, 0, 0). When the monster is killed, a message will be reported to all players and the monster will drop a red skull key.

