Left right arrows - LaTeX symbols

Symbol Command
$\harr$ \harr
$\lrarr$ \lrarr
$\leftrightarrow$ \leftrightarrow
$\leftrightarrows$ \leftrightarrows
$\rightleftarrows$ \rightleftarrows
$\leftrightharpoons$ \leftrightharpoons
$\rightleftharpoons$ \rightleftharpoons
Symbol Command
$\hArr$ \hArr
$\Harr$ \Harr
$\Leftrightarrow$ \Leftrightarrow
$\iff$ \iff
Symbol Command
$\leftrightsquigarrow$ \leftrightsquigarrow
Symbol Command
$\xleftrightarrow{P}$ \xleftrightarrow{P}
$\xtofrom{P}$ \xtofrom{P}
$\xleftrightharpoons{P}$ \xleftrightharpoons{P}
$\xrightleftharpoons{P}$ \xrightleftharpoons{P}
$\xLeftrightarrow{P}$ \xLeftrightarrow{P}

LaTeX arrow

LaTeX