Pang-bô͘:Chembox templatePar/formatPreviewMessage/doc

In Preview only: when a parameter name is unknown or misspelled, this message is shown. It maty appear in a section header.

Example:

Unknown parameter "Foo" (See parameter list). This message only shows in Seng khoàⁿ-māi, it will not show after Hoat-pò͘ siu-kái.

Populates Category:Chemical articles with unknown parameter in Chembox