[Zope] Checking multiple variables existence

[Justin Dunsworth]

Is there any way to check if multiple variables exist in the same if
statement? Right now I am having to writing multiple nested if statements
but can be quite cumbersome... so just looking for an easier way.

Currently I'd have to write:
<dtml-if var1>
  <dtml-if var2>
    <dtml-if var3>
    <dtml-else>
    </dtml-if>
  <dtml-else>
  </dtml-if>
<dtml-else>
</dtml-if>

When it would be easier to do something like:

<dtml-if "var1 and var2 and var3">
<dtml-else>
</dtml-if>

I've tried multiple different methods to accomplish this but haven't had
any luck... so is there an easier way to check multiple variables existence
in the same check?

Thanks.
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