|The field Postcard topic has the type Postcard topic|
Documentation about Information object: Postcard topic
A postcard theme allows you to categorize a card. The themes included are those defined by the Neudin catalog which refers. If you want to go more finely into a theme it is possible to link a postcard to a specific object (for example a specific flower like the rose or a model of car
A postcard can be linked to different postcard themes and different objects.