Property naming convention

[spatialillusions]

At the moment the plan is to use human readable names for the different properties, see property-names.md, but other possible options could be:

• Only use 1-2 letters for each property (FIELD instead of FIELD NAME)
• Add some kind of prefix to make all TacticalJSON attributes marked in some way e.g. tj_sidc: String

All kinds of suggestions are welcomed.