532910
1
Looks like there no tag for indoor (or outdoor) pillars or columns.
Some examples:
thbz
2
I use indoor=column, which is recognized at least by OpenLevelUp.
https://openlevelup.net/old/?lat=48.859891&lon=2.336713&z=21&t=0&lvl=1&tcd=1&urd=0&bdg=0&pic=0&nte=0&ilv=0#
But it is probably not a priority task to map these features…
