Evaluate expression, add leading zero to non-negative result < 10.
{{ 0expr|{{ CURRENTDOW}}}} = 06 for "{{CURRENTDOW|=}}" gives "Template:CURRENTDOW" [1]
0expr|
CURRENTDOW
"{{CURRENTDOW|=}}"
{{#expr:{{CURRENTDOW}}}} gives 6, for details see the talk page.
#expr: