"%sremovews(     %'     heinzi    '   )"
"%ssub(0123456789,1,3)" = "123"
"%ssub(0123456789,1,-3)" = "12"
"%ssub(0123456789,5)" = "56789"
"%ssub(0123456789,-3)" = "789"
%<r=%equal(heinz,heinz)>"%if(%r,1,0)" = "1"
%<r=%equal(heinz,deinz)>"%if(%r,1,0)" = "0"
%<r=%scmp(abc,xyz)>"%if(%[%r<0],-1,%if(%[%r==0],0,1))" = "-1"
%<r=%scmp(abc,abc)>"%if(%[%r<0],-1,%if(%[%r==0],0,1))" = "0"
%<r=%scmp(xyz,abc)>"%if(%[%r<0],-1,%if(%[%r==0],0,1))" = "1"