See Help:Expansion demo templates.

Example

edit

{{xpdop3c|3x|[[Help:Link]] [[Help:Go]]| }}

gives:

"{{3x|[[Help:Link]] [[Help:Go]] }}" → "Help:Link Help:Go Help:Link Help:Go Help:Link Help:Go " [1]

Comparison

edit

Compare:

{{xpsoc|d="|3x|[[Help:Link]] [[Help:Go]] }}

gives:

{{3x|Help:Link Help:Go }}Help:Link Help:Go Help:Link Help:Go Help:Link Help:Go