Store Preset 2.999 /use=ActiveForSelected /o SetUserVar $PMStart = 0; SetUserVar $PMStart = $PanMirrorBase; AddUserVar $PMStart = -500 SetUserVar $PMEnd = 0; SetUserVar $PMEnd = $PanMirrorBase; AddUserVar $PMEnd = 500; Replace Attribute "pan" At $PMStart Thru $PMEnd With $PMEnd Thru $PMStart If Preset 2.999 /nc Call Preset 2.999; Delete Preset 2.999 Extract Selection SetUserVar $PMStart = ; SetUserVar $PMEnd = ; SetUserVar $PanMirrorBase = (enter mirror base)