1;;These abbreviations are very convenient 2;;to use. A nice naming scheme is : 3;; 4;;  -> b=bool ; 5;;  -> i=integer ; 6;;  -> f=float ; 7;;  -> sy=symbol ; 8;;  -> s=string ; 9;;  -> o=Scheme object ;10;;  -> p=path.11;;  -> t=tree.12;;13;;  One can add the missing ones on demand.14(tm-define...