[Moose-dev] Question

Agile Vis ebook is superb, copied following snippet, know hopefully what it's doing, but want to make sure I understand how it works (in terms of "plain" Pharo): 1) @ RTPopup: Class name is enough, but it is initiated under the hood? 2) RTMetricNormalizer new ...: There is no need to keep reference to created object? Why? because messages sent to object (like normalizeSize) have a "sideeffect" on es? 3) RTMetricNormalizer connects to model via #yourself? Is every symbol or code block. that is sent to RTMetricNormalizer as argument, executed when finally "sent" to es? BR Mike v := RTView new. es := (RTEllipse new color: Color blue) elementsOn: #(4 5 1 2 3 5). v addAll: es. es @ RTPopup. RTMetricNormalizer new elements: es; alphaColor; normalizeSize: #yourself min: 20 max: 50; normalizeColor: #yourself. RTHorizontalLineLayout new alignCenter; on: es. es @ RTLabeled. v