currently (mac OSX) the right mouse button doesn't seem to do anything in the tile-map editor view,
perhaps this could be assigned to a temporary rectangular select command (e.g. RMB-drag to copy region?), or single click to 'pick tile' (like alt-click in photoshop for selecting colours from the workspace), or even placement of a designated tile (default 'zero'?.. but there could even be a seperate ''bg tile' analogous to having FG/BG paint colours in bitmap editors)
(EDIT - having seen how the 'rectangular-select' tool works, I think this would be the best use of the right-mouse click/drag)
currently (mac OSX) the right mouse button doesn't seem to do anything in the tile-map editor view,
perhaps this could be assigned to a temporary rectangular select command (e.g. RMB-drag to copy region?), or single click to 'pick tile' (like alt-click in photoshop for selecting colours from the workspace), or even placement of a designated tile (default 'zero'?.. but there could even be a seperate ''bg tile' analogous to having FG/BG paint colours in bitmap editors)
(EDIT - having seen how the 'rectangular-select' tool works, I think this would be the best use of the right-mouse click/drag)