1. A seat in combination with a support frame, the seat having a main support base, a backrest above the base for supporting
the back of a person, and an area for receiving the posterior of a person, the base having a plurality of outwardly opening
recesses at a first end part of the seat, such recesses facing substantially rearwards with respect to the seat, and at least
one substantially downwardly facing locking recess at a second end part of the seat, the first and second end parts being
at or near substantially opposite ends of the seat, and locking means adapted to reversibly close the locking recess to releasably
lock the seat to the support frame when the seat is in use;
the seat formed such that when it is in use it is able to releasably fit to the support frame and is lockable thereto by maneuvering
the seat so that a first part of the support frame is within at least one of the recesses at the first end part of the seat
and pivoting the seat about that first part of the support frame until the locking recess engages a second part of the support
frame; and
the seat being adjustable in that it can be set to alternative recline positions depending on which one of the recesses at
the first end part of the seat engages the first part of the support frame.
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