Queenside annotation symbol

The queenside is the half of the board traditionally associated with the queen's starting side, normally the a, b, c, and d files. Files are the board's vertical columns. The signs ⟨, ⟪, and ⋘ indicate increasing degrees of control advantage in that sector.

In Scid's NAG table, NAG means Numeric Annotation Glyph, a numeric code that a file or program renders as a visible mark. The single sign means a slight queenside control advantage, the doubled form a moderate one, and the triple form a decisive one. White and Black have different codes even when the visible glyph is the same, so the code or context identifies the side.

Queenside control can involve extra space, useful squares, mobile pawns, or better routes for pieces. It does not necessarily mean an attack on the queen, and it does not guarantee an overall advantage. Its directional counterpart is the kingside annotation symbol.