Language.Scheme.Variables
printEnv
copyEnv
extendEnv
findNamespacedEnv
macroNamespace
varNamespace
getVar
getNamespacedVar
defineVar
defineNamespacedVar
setVar
setNamespacedVar
updateObject
updateNamespacedObject
isBound
isRecBound
isNamespacedBound
isNamespacedRecBound
derefPtr
recDerefPtrs