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1.120.3 Object: change and update

broadcast: aSymbol
Send the unary message aSymbol to each of the receiver's dependents


broadcast: aSymbol with: anObject
Send the message aSymbol to each of the receiver's dependents, passing anObject


broadcast: aSymbol with: arg1 with: arg2
Send the message aSymbol to each of the receiver's dependents, passing arg1 and arg2 as parameters


broadcast: aSymbol withArguments: anArray
Send the message aSymbol to each of the receiver's dependents, passing the parameters in anArray


broadcast: aSymbol withBlock: aBlock
Send the message aSymbol to each of the receiver's dependents, passing the result of evaluating aBlock with each dependent as the parameter


changed
Send update: for each of the receiver's dependents, passing them the receiver


changed: aParameter
Send update: for each of the receiver's dependents, passing them aParameter


update: aParameter
Default behavior is to do nothing. Called by #changed and #changed: