(lit, plm) PlantUML (puml) PO File (po) Pony (pony) PowerBuilder (pbt, sra, srf, srm, srs, sru, srw) PowerShell (ps1, psd1, psm1) ProGuard (pro) Prolog (P, prolog, yap, pl, p6, pro) Properties (properties) Protocol Buffers (proto) Pug (jade, pug) PureScript (purs) ...