[FHPhotographer]

For those like me who struggle with nomenclature, "parametic" means definition: "Parametric Image Editing (PIE) [is] a type of non-destructive image editing [where] the software doesn't change the original files . Changes to images are recorded as sets of instructions (parameters)." And for those who want to hammer themselves over the head with technology speak until their digital ears bleed, there's a downloadable PDF on this blog that goes into the whole "parametric" thing in painful detail,
Brian