A *mathematics* file contains a list of mathematical environments that are
skipped during spell-checking. The text that is specified between a
"begincommand" and an "endcommand" string are skipped. The *mathematics* file is
format dependent. For the format TEX
the file TEXMATHENVIRONMENTS.4SPELL is used (the filename syntax is:
`"format"MATHENVIRONMENTS.4SPELL`). This file could look like this:

\[ \] \( \) \begin{equation} \end{equation} \begin{equation*} \end{equation*} \begin{math} \end{math} \begin{eqnarray} \end{eqnarray} \begin{eqnarray*} \end{eqnarray*} \begin{displaymath} \end{displaymath}

The first column indicates the begin environment command and the second column the end environment command. This means that the text:

\begin{equation} x+y=z\\ z-x=y\\ z-y=x \end{equation}is completely skipped when spell-checking your document. The mathematics will be colored by the mathematics color.

**N.B.** Not only mathematical environments are skipped and colored.
Also TeX text between a dollar signs is used to indicate mathematics.
E.g. `$X+Y$` and `$$X + Y$$` are examples of TeX mathematics.
You can switch this option off by unchecking the "Skip mathematics" field
in the "Format" tab sheet.