PAN... ??? mmmm..
I did not read the article in the MOI site. but I am surprised how they used that word, which is totally Indian word.

PAN in india means betel leaves. it is heart shaped leave , people add tobaco + limestone paste + arecanut and chew. After chewing sometime, the saliva becomes RED in colour and if you spit you can see RED. Qatar Govt has stopped spitting on the road, especially it will be a setback to those Bangaldeshis who is fond of this habit

by the way , Betel leaves are not in a tree. It is a creeper, which is supported by antoher tree