Output format:
QTree
Forest
Tree will display here when loaded...
Node Label:
↓
Help
Click and drag display
Click on leaf to create two daughters
Click on inner node to create new parent and left sister
Ctrl+Click on node to select label
Click "Set Label" or press "Enter" to give label to currently selected node
Alt+Click on node to remove all node descendants
Paste an existing tree in the text area below and click "Import" to modify it in the graphics editor.