diff --git a/source/Buoy-Metaprogramming-GS64-Extensions/GemStone64Platform.class.st b/source/Buoy-Metaprogramming-GS64-Extensions/GemStone64Platform.class.st
index d81f656..d6de32f 100644
--- a/source/Buoy-Metaprogramming-GS64-Extensions/GemStone64Platform.class.st
+++ b/source/Buoy-Metaprogramming-GS64-Extensions/GemStone64Platform.class.st
@@ -1,35 +1,35 @@
 Class {
-	#name : 'GemStone64Platform',
-	#superclass : 'LanguagePlatform',
-	#category : 'Buoy-Metaprogramming-GS64-Extensions',
-	#package : 'Buoy-Metaprogramming-GS64-Extensions'
+  #name : 'GemStone64Platform',
+  #superclass : 'LanguagePlatform',
+  #category : 'Buoy-Metaprogramming-GS64-Extensions',
+  #package : 'Buoy-Metaprogramming-GS64-Extensions'
 }
 
 { #category : 'class initialization' }
 GemStone64Platform class >> initialize [
 
-	LanguagePlatform setCurrentTo: self new
+  LanguagePlatform setCurrentTo: self new
 ]
 
 { #category : 'reflection' }
 GemStone64Platform >> atInstanceVariableNamed: name on: object put: value [
 
-	| index |
-	index := (object class allInstVarNames collect: #asSymbol)
-		indexOf: name asSymbol
-		ifAbsent: [ self error: ('<1s> not found in <2p>' expandMacrosWith: name asString with: object) ].
-	object instVarAt: index put: value
+  | index |
+  index := (object class allInstVarNames collect: #asSymbol)
+    indexOf: name asSymbol
+    ifAbsent: [ self error: ('<1s> not found in <2p>' expandMacrosWith: name asString with: object) ].
+  object instVarAt: index put: value
 
 ]
 
 { #category : 'process scheduling' }
 GemStone64Platform >> fork: block named: processName at: priority [
 
-	| process |
-	process := self newProcessNamed: processName evaluating: block at: priority.
-	process resume.
-	Processor yield.
-	^process
+  | process |
+  process := self newProcessNamed: processName evaluating: block at: priority.
+  process resume.
+  Processor yield.
+  ^process
 ]
 
 { #category : 'process scheduling' }
@@ -45,15 +45,28 @@ GemStone64Platform >> newProcessNamed: processName evaluating: block at: priorit
 { #category : 'reflection' }
 GemStone64Platform >> globalNamed: aSymbol ifAbsent: absentBlock [
 
-	^ (GsCurrentSession currentSession symbolList objectNamed: aSymbol)
-		  ifNil: absentBlock
+  ^ (GsCurrentSession currentSession objectNamed: aSymbol)
+      ifNil: absentBlock
+]
+
+{ #category : 'reflection' }
+GemStone64Platform >> globalNamed: symbol ifAbsentPut: block [
+
+  ^ (GsCurrentSession currentSession objectNamed: aSymbol)
+      ifNil: [
+        | object |
+        object := block value.
+        (GsCurrentSession currentSession objectNamed: #Globals)
+          at: aSymbol put: object.
+        object
+      ]
 ]
 
 { #category : 'reflection' }
 GemStone64Platform >> includesGlobalNamed: aSymbol [
 
-	^ (GsCurrentSession currentSession symbolList objectNamed: aSymbol)
-		  notNil
+  ^ (GsCurrentSession currentSession objectNamed: aSymbol)
+      notNil
 ]
 
 { #category : 'message digest' }
@@ -65,5 +78,13 @@ GemStone64Platform >> messageDigest: string [
 { #category : 'accessing' }
 GemStone64Platform >> os [
 
-	^ GemStone64UnixPlatform current
+  ^ GemStone64UnixPlatform current
+]
+
+{ #category : 'reflection' }
+GemStone64Platform >> removeGlobalNamed: aSymbol ifAbsent: absentBlock [
+
+  | globals |
+  globals := GsCurrentSession currentSession objectNamed: #Globals.
+  ^ globals removeKey: aSymbol ifAbsent: absentBlock
 ]