Created by Thomas Zimmermann, last modified on Nov 02, 2021

Model Layers are used to group activities together. Activities on the same layer are drawn at the same time (z-order). A layer has a name, an ID, it can be turned on / off, and their opacity can be changed. These changes have an impact on all activities on that layer. The ID of the layer is used for drag and drop operations of activities between different Gantt charts. Dropped activities will be added to the layer with the same ID. The layer name will be used as the default ID for newly created layers. The ID only needs to be changed if the same layer type will be used with different names in different Gantt charts.