Toggles

Note: click with the right mouse button on any WebEQ equation to bring up a font size control panel.

Here are two nested toggles.

Click on the ellipsis to discover more terms of the Taylor series.
Click on the ellipsis again to see the fourth term.
Clicking on the terms themselves will remove them.

\sin(x) = x + \toggle {\cdots}
                      {\frac{x^3}{3!} + \frac{x^5}{5!} +
                       \toggle{\cdots}{\frac{x^7}{7!} + \cdots}
                              {Expand further}{Click to shrink}
                      }
               {Click to expand}{Click to shrink}

More information on these commands may be found in Browser Actions: Toggling expressions of the WebTeX documentation.