Rendered via Layout, section "Main":

NamespaceResolving template from Singles.

<!-- Use of custom-namespace ViewHelper: -->
The following is a dump of the "page"
Argument passed to CustomViewHelper:
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123
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<!-- Use of custom-namespace ViewHelper, inline mode: -->
The following is a dump of the "page"
Argument passed to CustomViewHelper:
---------------------------
321
---------------------------

<!-- Use of custom-namespace ViewHelper, inline mode, alias: -->
The following is a dump of the "page"
Argument passed to CustomViewHelper:
---------------------------
456
---------------------------

# Sir's template is rendered above (655 bytes).