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E

epsilon (lower case greek letter)

$$\epsilon$$ gives \epsilon

equals

@@x=2@@   is x=2

escaping the TeX filter

  • With two triple $'s embracing an expression you can make the filter to escape and the code itself is shown (with two embracing double $'s).
  • Ex.: $$$a^2$$$ produces $$a^2$$, i.e. prevents the filter to render it as a formula gif.

eta (lower case greek letter)

$$\eta$$ gives \eta