How can I effectively remove water stains on paper?

To effectively remove water stains on paper, gently dab the affected area with a clean, dry cloth to absorb excess moisture. Then, place the paper between two clean, dry paper towels and press with a heavy object to help absorb remaining moisture. Avoid rubbing or using excessive force, as this can damage the paper. If the stain persists, you can try using a hairdryer on a low, cool setting to help dry the paper further. Be patient and allow the paper to dry completely before handling it again.