# Why is Hi deleted?

When I start my answer with Hi-Z, it is shown in the preview, but after submission, the Hi- part is auto-deleted.
Why is that?? Is it to prevent salutions like Hi there?

• It looks like to be a false-positive of meta.stackexchange.com/questions/2950/… – Huisman Apr 28 '20 at 14:07
• Does this answer your question? Oddness starting a post with "Hi-z" – PeterJ Apr 30 '20 at 9:38
• @PeterJ It does – Huisman Apr 30 '20 at 9:43
• Strange, this question has "Hi" at the beginning... – user103380 May 3 '20 at 3:46
• @KingDuken It starts with a picture.... – Huisman May 3 '20 at 5:07
• Why not use high-z, which is more grammatically correct? (and how it was phrased in the original question) That should get past the filter. – Adam Lawrence May 11 '20 at 13:17