Some of these still surprise me by working:
[tex]\mathit{ some .maths }[/tex]
[tex]\textsl{ some text }[/tex]
[tex]\textit{ some text }[/tex]
[tex]\mathbf{ some .maths }[/tex]
[tex]\bold{ some .maths }[/tex]
[tex]\textbf{ some text }[/tex]
[tex]\mathrm{ some .maths }[/tex]
[tex]\textrm{ some text }[/tex]
[tex]\text{ some text }[/tex]
[tex]\mathfrak{ some .maths }[/tex]
[tex]\frak{ some .maths }[/tex]
[tex]\tt{ some .maths }[/tex]
[tex]\texttt{ some text }[/tex]
[tex]\texttt{\sl{some text }}[/tex]
[tex]\mathcal{ SOME .MATHS }[/tex]
CB