Limit raise "or better"?

[Bbradley62]

If 3♥ is "limit raise or better" by an unpassed hand, why is there an upper limit of 12 total points?

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[lycier]

yes,it seems that the explanations are a bit contradictory.

[georgi]

These sequences were "unlocked" in v30.

 

Now shows just 10+TP and it's really LR+ instead of LR as now.

 

That change captures UNNT & Michaels overcall where opponent shows two or at least one known suit.

 

Similar to

 

1♥ - 1♠ - 2♠ -> Cue: limit raise or better -- 3+ ♥; 11+ total points

 

 

That will help more loaded hands to go through LR+ instead jump to game with unknown strength of 12-16HCP and prevent partner from investigating ( including responder as well because opener makes attitude call also to LR+ range).