[Chimera-users] Counting the number of water molecules

Hi, Is there a command in UCSF chimera to count the total no. of water molecules in a PDB file? Can we also count, say the total number of alanine residues in a PDB file or any other other residue for that matter? -- Prathvi Singh, Research Fellow, Department of Biological Sciences & Bioengineering, Indian Institute of Technology, Kanpur-208016