Hi I do not know how to do the better layout of input package filter which was integrated to latest Pharo 3.0 image. It is defined in method PackageTreeNautilusUI>>buildFirstColumn: (it means package column) And code looks like: ^ PanelMorph new changeProportionalLayout; addMorph: self buildPackageSearch â <ââ this is new filter input dialog" fullFrame: ((0@0 corner: 1@0.1)); â and his layout definition" addMorph: self buildList â <ââ this is package listâ fullFrame: ((0@0.1 corner: 1@1) asLayoutFrame bottomOffset: -25); â and his layout definition" addMorph: buttons â <ââ Hierarchy button" fullFrame: ((0@1 corner: 1@1) asLayoutFrame topOffset: -25); â and his layout" hResizing: #spaceFill; vResizing: #spaceFill; yourself. So, now filter dialog and package list are flexible and change their height according to window size. I have tried to define input dialog of fixed size (according to font size), but I do not know how. Any suggestion? Thanks, Jura