Play with sandbox
From Electrical Installation Guide
you can use this page to test wikitext language, it is free to modify by anybody
test3
Color
Equations can use color:
{\color{Blue}x^2}+{\color{YellowOrange}2x}-{\color{OliveGreen}1}
x_{1,2}=\frac{-b\pm\sqrt{\color{Red}b^2-4ac}}{2a}
It is also possible to change the background color (since r59550), as in the following example:
| Background | Wikicode | Rendering (in PNG) |
|---|---|---|
| White | e^{i \pi} + 2 = 0
| 
|
\definecolor{orange}{RGB}{255,165,0}\pagecolor{orange}e^{i \pi} + 2 = 0
| 
| |
| Orange | e^{i \pi} + 2 = 0
|
|
\definecolor{orange}{RGB}{255,165,0}\pagecolor{Green}e^{i \pi} + 2 = 0
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Note that color should not be used as the only way to identify something, because it will become meaningless on black-and-white media or for color-blind people. See Wikipedia:Manual of Style (accessibility)#Color.
a2 − b2 = (a + b) * (a − b)
