Examples of three XP spectra of an oxygen-rich star (source_id: 5853243278519978112, solid red line), a carbon-rich star (source_id: 5716487091710504064, dashed gray line), and an S-type star (source_id: 5233074194539855360, dashed black line). The spectra are normalized to the maximum flux for comparison. The shaded color denotes the ranges of the four measured TiO bands. The four solid blue lines represent the pseudo-continuum of measuring equivalent width.