One night I woke up to find my sash window open and the tall figure standing on the balcony, looking out across the town.
The best plan of attach was to conceal the microphones inside the aluminum sash windows on the target side of the building.
"A window in a vertically sliding frame is called a sash window: a single-hung sash has only one half that moves; in a double-hung sash, Both parts slide."
The final design was for a grandRoyal crescent with cream stucco facade and tall sash windows, overlookingprivate gardens and the park.