In Pharo3, there seems to be new shortcuts going on. These do interfere with TWM ones (or the other way around). What to do to get this to work again? TWMKeyMapping>>buildKeyMappingOn: aBuilder <keymap> "See shortucts accessor to add/change a shortcut " self shortcutsActionAndKeysDo: [:action :keys| (aBuilder shortcut: action) category: self shortcutCategory default: keys do: [ self windowManager perform: action ]. ]. aBuilder attachShortcutCategory: self shortcutCategory to: PasteUpMorph.. TWMKeyMapping class>>shortcuts ^ { #minimizeAllWindows -> 'Minimize all windows' -> [$r command, $m command]. #maximizeAllWindows -> 'Maximize all windows' -> [$r command, $m shift command]. #tileVisibleWindows -> 'Tile visible windows' -> [$r command, $t command]. #tileLastUsedWindows -> 'Tile last used windows' -> [$r command, $l command]. #tileBrowsers -> 'Tile browsers' -> [$r command, $b command]. #tileWorkspaces -> 'Tile workspaces' -> [$r command, $z command]. #tileTesters -> 'Tile testers' -> [$r command, $u command]. #tileMonticellos -> 'Tile monticellos' -> [$r command, $c command]. #tileInspectors -> 'Tile inspectors' -> [$r command, $i command]. #tileDebuggers -> 'Tile debuggers' -> [$r command, $d command]. #tileChanges -> 'Tile changes' -> [$r command, $c shift command]. #tileTools -> 'Tile tools' -> [$r command, $t shift command]. #tileSystem -> 'Tile system windows' -> [$r command, $y command]. #snapshotWorld -> 'Snapshot current world state' -> [$r command, $s command]. #worldBackward -> 'Move to previous world state' -> [$r command, $p command]. #worldForward -> 'Move to next world state' -> [$r command, $n command]. #deleteCurrentSnapshot -> 'Delete current world state' -> [$r command, $d shift command]. #topWindowMoveLeft -> 'Move window to left area' -> [$r command, $1]. #topWindowMoveRight -> 'Move window to right area' -> [$r command, $2]. #topWindowMoveTop -> 'Move window to top area' -> [$r command, $3]. #topWindowMoveBottom -> 'Move window to bottom area' -> [$r command, $4]. #topWindowMoveTopLeft -> 'Move window to top left area' -> [$r command, $5]. #topWindowMoveTopRight -> 'Move window to top right area' -> [$r command, $6]. #topWindowMoveBottomLeft -> 'Move window to bottom left area' -> [$r command, $7]. #topWindowMoveBottomRight -> 'Move window to bottom right area' -> [$r command, $8]. #cycleClockwise -> 'Last visible window on stack come to top' -> [$r command, $>]. #cycleCounterClockwise -> 'First visible window on stack go to bottom' -> [$r command, $<]. #switchToNextWorld -> 'Switch to next world' -> [$r command, $r command] } Phil