Asterisk (example of wrong language)

From Teflpedia

In language teaching, a *leading asterisk alerts that what follows is an example of wrong language. This is a linguistics convention.

Example:

She is taller than I
*She is taller then I (before the sentence)
She is taller *then I (before the word)

In teflpedia wrong language is additionally marked with underlining and a hover function.

*She is taller then I
She is taller *then I

This is implemented with the {{wrong}} template:

{{wrong|She is taller then I}}
She is taller {{wrong|then}} I

Several alternatives were discussed in October 2012 and they can be seen in Template:Wrong/Dev.