About Layers

This section provides information about the creation of layers or groups.

• A layer is always created by default with a dotted frame as there is no associated geometrical set. A layer is highlighted with a light blue color, meaning that it is selected but not active.
  
  

  Once you modify it, the frame is displayed with a full line. The layer is highlighted with a deep blue color, meaning that it is active and that objects will be created within this layer.
  
  

• When a layer is active, it is also active in the tree.
• The created layer or group is always added after the active layer.
• When created in a group, the layer is always added at the end of the group.
• You can modify the group or the layer's name by tapping it and change its name.

This section provides information about the hide/show and lock/unlock of layers or groups.

• You can lock the group or layer by tapping . Conversely, tap the icon again to unlock it and make it pickable.
• You can hide the group or layer by tapping . Conversely, tap the icon again to show it.

This section provides information about the selection of curves while in a command.

When you enter a command, only the curves of the active layer can be selected.

Here is an example: the Eraser command is launched and Layer 1 is active. Therefore green curves belonging to Layer 1 can be selected whereas red curves belonging to the inactive Layer 0 are shown in transparent mode and cannot be selected.

Tip: If you select both Layer 0 and Layer 1, green and red curves can be selected.

This section provides information about the drag of layers.

• In a group, you can drag a layer and drop it elsewhere in the group.
• You can drag a layer onto another layer in the tree to create a group containing the two layers.
  
  
• You can create an independent layer (that do not belong to a group) by dragging it outside the group.
• In the work area, you can drag an object (for example, an image or a curve) into another layer.

This section provides information about the management of hybrid layers.

A group should only contain layers, namely geometrical sets. However, it can happen that a group contains both geometrical sets and features. The behavior of this hybrid group is the same as that of a group containing only geometrical sets, only its visualization differs.

You can modify an hybrid group only to keep geometrical sets. Its visualization is modified accordingly.