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: