 true(Right-to-left direction), false (Left-to-right directiion), undefined(Contectual direction, i.e.direction defined by first strong character of input string)</li>
<li>isOutputVisual {boolean} (defaults to false): allowed values: true(Visual mode), false(Logical mode)</li>
<li>isOutputRtl {boolean}: allowed values true(Right-to-left direction), false (Left-to-right directiion), undefined(Contectual direction, i.e.direction defined by first strong characterof input string)</li>
<li>isSymmetricSwapping {b