The Modern, ...e6 and ...Be7 is a variation of the London System, catalogued as ECO A48. The line runs 1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 Be7 5. Bd3 O-O 6. O-O b6, reaching the position shown below after 12 half-moves.
Both sides have pawns in the centre (White on d4, Black on d5). Development is level at three minor pieces each. It is White to move after six moves. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank.
On the London System generally: A solid system for White with d4, Nf3, Bf4. Easy to learn with consistent plans.
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The Modern, ...e6 and ...Be7 goes 1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 Be7 5. Bd3 O-O 6. O-O b6. It is a variation of the London System and is catalogued as ECO A48.
The Modern, ...e6 and ...Be7 is ECO A48. ECO codes group openings by their move order, so nearby codes cover closely related lines of the London System.
Stockfish evaluates the position after 1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 Be7 5. Bd3 O-O 6. O-O b6 at +0.33 at depth 18, which is a slight pull for White, within normal opening margins. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
Both sides have pawns in the centre (White on d4, Black on d5). Development is level at three minor pieces each. It is White to move. Both kings have castled kingside, so play tends to shift to the centre and the opposite flank.