'From Squeak3.2 of 11 July 2002 [latest update: #4956] on 27 March 2003 at 9:19:35 pm'! !Workspace methodsFor: 'binding' stamp: 'sumim 3/27/2003 21:16'! bindingOf: aString acceptDroppedMorphs ifTrue: [ bindings isNil ifTrue: [bindings _ Dictionary new]. (bindings includesKey: aString) ifFalse: [bindings at: aString put: nil]. ^bindings associationAt: aString] ifFalse: [^ nil]! !