Google has made some updates to the meta robots directive assist documentation, particularly by including extra examples for the max-snippet and specifying for every tag what Google’s default habits is when the tags are omitted. I extremely advocate you re-review these docs ranging from the valid indexing & serving directives till the top of that part.
Listed below are aspect by aspect display screen pictures of the outdated and the brand new model if you wish to assessment what modified:
OLD (click on to enlarge):
NEW (click on to enlarge):
Discussion board dialogue at Twitter.