Page "Transclusion" Paragraph 6

Under some circumstances, and in some technical contexts, transcluded sections of text may not require strict adherence to the " context neutrality " principle, because the transcluded sections are capable of parameterization.

Parameterization implies the ability to modify certain portions or subsections of a transcluded text depending on exogenous variables that can be changed independently.

This is customarily done by supplying a transcluded text with one or more substitution placeholders.

These placeholders are then replaced with the corresponding variable values prior to rendering the final transcluded output in context.