browser := GLMTabulator new.
browser column: #list; column: #inspector.
browser transmit to: #list; andShow: [ :a | a list ].
browser transmit from: #list; to: #inspector; transformed: [ :stringFromList | GTPlayPage new content: stringFromList ]; andShow: [ :a | 
	a custom: GTPlayground new  ].
browser openOn: { 'Smalltalk' . '41+1' }