Responding Over Our Diamond
There is no worse bid in all of bridge than the Precision 1 opening bid.  It is simply gawd-awful!   The bid conveys almost no information, and often leads to a poor score.  One of the primary problems is that responder cannot pass with a poor hand because the bid might be done with a singleton, so it's semi-forcing.  You can pass only if you have at least a 4-card diamond suit and fewer than 5 points.

A great many Precision players try to solve this problem by lowering the point-count for 1NT - often 13-15 or 14-16, but they also play many of them doubled, for a bottom board.  There's a better solution!

We have developed a set of agreements for Responding Over Our Diamond bid which we call ROOD.  It isn't perfect, but it's far better than not having an agreement!

Below is a description of our agreements:

ROOD -- Much of this agreement was developed by Lisa Walker

Major Suit Responses
A major suit response at the 1-level is non-forcing, with fewer than 10 points.
    A bid of either 1 or 1 is Non-Forcing and can be done with zero points!  Wouldn't you bid 1 with this hand in preferece to passing if your partner might have a singleton diamond and four spades?  even without four spades, it's probably better to bid than pass what might be a 1-4 card diamond suit.
    The ROOD agreement is that a bid of either major at the 1-level is non-forcing with 10 or fewer than points.
A jump response to either 2's or 2's is always at least a 5-card suit with 11+ points.  This bid is forcing for one more round.

One Notrump Response
This response of 1NT promises 11+ HCP, and is forcing.  The bid does not deny a 4-card major, and responder often has one or both 4-card majors.  Actually, it does not deny a 5-card major, either, if responser has 5+ in one major and exactly four in the other major.  Responder bids 1NT and if opener rebids a major, the rest of the auction is easy, but if opener raises to 2NT, which denies a 4-card major, she can then bid the 5+card major.
    After a 1NT response, the opener can rebid a 4-card major, if she has one.  If she has both majors, she bids the heart suit first.  If she bids 2's she denies a 4-card heart suit.

    Opener can also rebid 3, which would show a 4-card diamond suit and at least a 5-card club suit.
Two Notrump or Three Notrump Responses
    If responder jumps to 2NT, the bid shows 5+5+ in the majors

    If responder jumps to 3NT, the bid shows 5+5+ in the minors

Jump Responses at the 3-Level
These bids are best defined as 6-8-10 calls, although we are not strict with that definition... It means a 6-card suit with 8-10 points, but some 7 point hands qualify and so do some 11 point hands.
    Over a 1 opening bid, all four suits qualify as 6-8-10 hands.

The above agreement was in response to the awful Precision opening bid of 1, and now after abut six months of playing it, we are satisified that it is an excellent solution to a terrible bidding problem.

Extended ROOD
We have added two more responses to ROOD and refer to them as Extended ROOD. We have not yet played this, but we have high hopes...

Two Clubs Response
This is a non-forcing bid showing at least 4-4 in the minors and 8-10 points.  The bid denies a 4-card major.  In general, this bid is just a way finding the best partial score contract.  I suspect that a few hands with 7 points or even a few with 11, might also be good candidates.  Hands with stray jacks don't have much value, even though players count them as a point.  Either of these two hands would be good examples...
Two Diamonds Response
Also both minors, but usually at least 4-5 instead of 4-4 in clubs and diamonds, and much stronger.  It's forcing, with the hopes of playing in a 3NT contract.  We borrowed from the Inverted Minor Raise for the rebids used by the opener.
    Opener's Rebids Over a 2 Response
    • Bidding either major shows a stopper in that suit and denies a stopper in the other major
    • Bidding 2NT shows a stopper in both majors
Both of these two extended ROOD bids deny a 4-card major. NOTE:  The reason you should have at least 5-4 in the minors for this 2 call is because with a 4-4-4-1 pattern you don't want to hide that 4-card major, and with a 4-4-3-2 pattern and 11+ points it's probably better to respond 1NT. :