Using the AMS begin{align} environment

We received the following question via the Contact form on this forum:

How can you use the begin{align} ..&=..end{align} construct in SWP rather than begin{eqnarray}..&=&..end{eqnarray}

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The reply to this question is:

Revise the multi-line display, choose the Advanced button and then turn on the Enable Alignment check box with Standard selected.  When the document is saved the align environment will be used rather than the eqnarray environment.