If you look at the Jeppesen approach chart "approach briefing information section", you can see Apt. Elev., TDZE, RWY elevations. But some elevations are written in

**bold type**and some elevations are not.

I don't know the difference. I looked up every book that I have and I googled it. I asked this question to my CFI friends. But nobody knows the exact difference.

If you know the answer, please help me to find the answer.

Thanks. ^^