A. Set the icon orientation in the shape attribute

<clr-icon shape="caret up"></clr-icon>
<clr-icon shape="caret right"></clr-icon>
<clr-icon shape="caret down"></clr-icon>
<clr-icon shape="caret left"></clr-icon>
B. Set the icon orientation in the dir attribute

<clr-icon shape="caret" dir="up"></clr-icon>
<clr-icon shape="caret" dir="right"></clr-icon>
<clr-icon shape="caret" dir="down"></clr-icon>
<clr-icon shape="caret" dir="left"></clr-icon>