Error number 4001 in 4: Error while evaluating velocity template htmlheader.vm
Knowledge Base Article

### Wiki Page's First Paragraph

The first few sentences of your wiki page is used by the search engines (vCalc's and Google etc) to show the users a sample of your page.  To help the users, vCalc suggests that your first sentence clearly names what your calculator does.  Here is an example of Google's results for searching for "Microeconomics Calculator".

The following shows the first sentence for a single equation:

### Adding an image to the wiki page

Images can really help convey a lot of information.  In the example above, the Frustum of Cone is show.   First, it helps the user understand what a frustum of a cone is (basically a slice of a cone).  Second, it helps show where the measurements are that are used as inputs to the calculator.   In this case, it's the top radius (a), the bottom radius (b), and the height (h).

To put your image in a box and have it float to the right, save your work, and open the wiki version of the Edit function and change the text pointing to your image from:

•  [[image:ConeFrustumVolume-illustration.png||height="157" width="149"]]  to
•  {{box cssClass="floatinginfobox"}}[[image:ConeFrustomVolume-illustration.png||width="149"]] Right Circular Cone (frustum) {{/box}}

In this example, the attached file is a .png, but .jpg files work well too.  The image is sized to a height of 157 pixels and a width of 149 pixels.  Using the box formatting, the image is

1. put in a box,
2. floated to the right for wrapping text, and
3. given the caption "Rigth Circular Cone (frustum)".