void main()
{

object oPC = GetLastUsedBy();

if (!GetIsPC(oPC)) return;

int DoOnce = GetLocalInt(oPC, GetTag(OBJECT_SELF));

if (DoOnce==TRUE) return;

SetLocalInt(oPC, GetTag(OBJECT_SELF), TRUE);

ActionSpeakString("This passage is lit by shelf fungus, which glows with a dim blue fluorescence. The corridor ends in a crude dead end.");

}