One-dimensional flux-correlation function, ξ_1d, for BOSS quasars showing correlations of δ_q(λ) within the same forest. The correlation function is shown as a function of wavelength ratio for the data and for the mocks (procedure Met1). Prominent peaks due to Lyα-metal and metal-metal correlations are indicated. The peak at λ₁/λ₂ ~ 1.051, which is seen in the data but not in the mocks, is due to CII(133.5)-SiIV(140.277) at z ~ 1.85, outside the redshift range covered by the mocks.