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\startformula}\sqrt[3]{4n} \ne \sqrt[3] {\vphantom{4} n}stoptext\stopformula</context>\stoptext</cd:example></cd:examples>
Framed the example to make it clearer
<cd:description><!-- the long description of the command goes here -->
<tt>\vphantom</tt> 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.</cd:description>
<cd:examples><cd:example title="Aligning the height top of square root signs (radicalradicals) signs">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.) <context source="yes">\setuppapersize [A7] [A7]\starttext\framed{
\startformula
\sqrt[3] {n} \quad \sqrt[3]{4n} \ne quad \sqrt[3] {\vphantom{4} n} \quad \sqrt[3] {n}
\stopformula
<cd:notes></cd:notes>
<cd:seealso>
