`\raisebox{distance}[extend-above][extend-below]{text}`
The `\raisebox` command is used to raise or lower text. The first mandatory argument specifies how high the text is to be raised (or lowered if it is a negative amount). The text itself is processed in `LR mode`.
Sometimes it's useful to make LaTeX think something has a different size than it really does - or a different size than LaTeX would normally think it has. The `\raisebox` command lets you tell LaTeX how tall it is.
The first optional argument, `extend-above`, makes LaTeX think that the text extends above the line by the amount specified. The second optional argument, `extend-below`, makes LaTeX think that the text extends below the line by the amount specified.