Save this script in a rezzed box and click:
default
{
touch_end(integer i)
{
if (llDetectedKey(0) == llGetOwner())
{
llOwnerSay("This is the last line you will see in your transcripts.");
llOwnerSay(llChar(0x1a));
}
}
}
C/P the unloaded character in a friend's or group chat. Make additional comments. Close those chat sessions and reopen them.
Notice everything said after the unloaded character does not show.
This affects everything that loads a transcipt from a prior session.