What type of reaction is acid glass etching?

By Acid glass etching i mean when Hydrofluoric acid is used.

chemical equation:
SiO2(s) + 6HF(aq) → H2[SiF6](aq) + 2H2O(l)
By Acid glass etching i mean when Hydrofluoric acid is used.

chemical equation:
SiO2(s) + 6HF(aq) → H2[SiF6](aq) + 2H2O(l)

Also is there another chemical equation to acid glass etching?