diff --git a/devNotes/Useful JS Function Documentation.txt b/devNotes/Useful JS Function Documentation.txt
index 07d0905355e2e932d3430659a61ba7e6deb1a3eb..602967b831108ea89b67a0622513be3167fafa7f 100644
--- a/devNotes/Useful JS Function Documentation.txt	
+++ b/devNotes/Useful JS Function Documentation.txt	
@@ -58,6 +58,8 @@ mutualChildren(slave1, slave2) - Returns if slave1 and slave2 have children toge
 
 isSlaveAvailable(slave) - Returns if slave is available and not confined someplace.
 
+assignmentVisible(slave) - Returns whether a slave's current assignment is shown in Main. Often used as a proxy for "penthouse slave".
+
 randomRelatedSlave(slave) - Returns a random relative of slave if possible.
 
 randomRelatedAvailableSlave(slave) - Returns a random available relative of slave if possible.