diff --git a/ristretto255.go b/ristretto255.go
index 00f6f5c..03ac4b0 100644
--- a/ristretto255.go
+++ b/ristretto255.go
@@ -256,16 +256,19 @@ func (e *Element) Decode(in []byte) error {
 	return nil
 }
 
+// Add sets v = p + q, and returns v.
 func (v *Element) Add(p, q *Element) *Element {
 	v.r.Add(&p.r, &q.r)
 	return v
 }
 
+// Sub sets v = p - q, and returns v.
 func (v *Element) Sub(p, q *Element) *Element {
 	v.r.Sub(&p.r, &q.r)
 	return v
 }
 
+// Neg sets v = -p, and returns v.
 func (v *Element) Neg(p *Element) *Element {
 	v.r.Neg(&p.r)
 	return v