The text sizes of the various labels plotted on the LIGPLOT diagram can be defined as follows:-
TEXT SIZES (Relative sizes in Angstroms) ---------- 0.80 <- Residue names: Ligand residues 0.63 <- Residue names: Non-ligand residues 0.50 <- Residue names: Water molecule IDs 0.50 <- Residue names: Hydrophobic-interaction residues 0.50 <- Residue names: in simple-residue representation 0.31 <- Atom names: Ligand atoms 0.31 <- Atom names: Non-ligand atoms 0.44 <- Hydrogen-bond lengths