One question...

Theme: Package, component in PCB

Why is the component property "IS_SMD" often missing?
The property IS_SMD is only meant for components that TARGET does not recognize as SMDs by itself. A 0603 is recognized automatically. But there are also SMD connectors which have drill holes for any nipples or which are mounted on the side of the board. For these you can specify IS_SMD, so that the Pick&Place list for the assembly is correct or the parts list in general.