# \vphantom

## Summary

The command \vphantom creates an invisible item that has height but no width.

## Settings

 \vphantom{...} {...} content

## Description

\vphantom typesets the supplied content and then throws it away, leaving a 'phantom' i.e. an invisible item that has zero width but the maximum height of the phantom text. This then influences the height of what follows.

## Examples

### Aligning the top of square root signs (radicals)

In this example the expressions have been framed to better highlight the differences. The third cube root contains a 'phantom' digit 4 so that its height matches the second one. The first and last don't have this phantom and have a smaller root sign. (Actually, it's the same sized character but lower in the line so it protrudes below the baseline a little.)

\setuppapersize [A7] [A7]
\starttext
\framed{
\startformula