'From Squeak3.5 of ''11 April 2003'' [latest update: #5180] on 29 April 2003 at 9:26:59 pm'! "Change Set: KCP-0052-rmObsoleteFromSystDict Date: 29 April 2003 Author: stephane ducasse mark as obsolete (with flag and error) a method that was obsolete and not invoked"! !SystemDictionary methodsFor: 'deprecated' stamp: 'sd 4/29/2003 21:02'! forceDisplayUpdate self flag: #deprecated. self error: 'Method Deprecated: Use DisplayScreen>>forceDisplayUpdate'! !