HCL OR HCI

Just entering your forums, I see Glossary of Terms by Steve who says: “HCl Hydrochloric Acid (HCl)”. Then in next forum I enter, Rev. Paul says, "HCL (hydrochloric acid) naturally. It's easier on the stomach, and has less taste.” So, is it HCI or HCL? I mean, either way it's hydrochloric acid that you want us to use, but why the different labels?

Some might interpret the L as an I (i). And, the font you are using may show l or L.

Can be confusing, so I always write it HCL so there is no question.