1 In \textbar{}text\textbar{} mode. Still in \textbar{}text\textbar{} mode
2 In |math| mode: |\hat{}. In \textbar{}text\textbar{} mode inside math mode
3 Still in |math| mode In \textbar{}text\textbar{} mode: \textbar{}\^.
4 The symbol can be only in math: \ensuremath{\longleftarrow{}} $a<b$
6 $$ unicode mapping in math mode:
7 in text: \ensuretext{\textexclamdown{}}
9 in math: \longleftarrow{}
10 none: \unicodechar{1911} $$
11 unicode mapping in text mode:
12 in text: \textexclamdown{}
14 in math: \ensuremath{\longleftarrow{}}
15 none: \unicodechar{1911}