Is "Used with landscape" outdated?

Hi,

The documentation suggests setting the material usage flag “Used with landscape” in the landscape material chapter.
Hovever, in the material editor details, there is no such flag.
Is the documentation outdated, or am I missing something here?

This is the part of the documentation. (Seems I cant post a link and a screenshot since the new forum tech)
https://docs.unrealengine.com/latest/INT/Engine/Landscape/QuickStart/4/index.html

Cheers,
Klaus