     , {<span class="string">'\alpha/2'</span>}   );

annotation(gcf, <span class="keyword">...</span>
    <span class="string">'textarrow'</span>     , [0.8522 0.7863], [0.2971 0.1431], <span class="keyword">...</span>
    <span class="string">'TextEdgeColor'</span> , <span class="string">'none'</span>         , <span class="keyword">...</span>
    <span class="string">'FontSize'</span>      , 30             ,<span class="keyword">...</span>
    <span class="string">'String'</span>        , {<span class="s