In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+03C4 (GREEK SMALL LETTER TAU).
\bbalpha\bbbeta\bbchi\bbdelta\bbDelta\bbdotlessi\bbdotlessj\bbepsilon\bbeta\bbgamma\bbGamma\txtbbtau
The τ symbol (Greek small letter tau, U+03C4), written as \txtbbtau in LaTeX text mode.
TeXForm parses this entry as a character leaf mapped to U+03C4 (GREEK SMALL LETTER TAU).
\bbalpha\bbbeta\bbchi\bbdelta\bbDelta\bbdotlessi\bbdotlessj\bbepsilon\bbeta\bbgamma\bbGamma\txtbbtau