:   '''[namespace] eval''' ''namespace arg'' ?''arg ...''?

Activates a namespace called ''namespace'' and evaluates some code in that context. If the namespace does not already exist, it is created. If more than one ''arg'' argument is specified, the arguments are [concat]enated together with a space between each one in the same fashion as the '''[eval]''' command, and the result is evaluated.

If ''namespace'' has leading namespace qualifiers and any leading namespaces do not exist, they are automatically created.

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**See also**
   * [namespace]
   * [eval]
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