In ArcGIS 10, is snapping established separately for each layer?

In ArcGIS 10, snapping is not established separately for each layer; rather, it is defined at a global level within the project settings. This means that when snapping is enabled, it applies to all layers in the current map document based on the overall snapping configuration rather than individually for each layer. Users can choose which layers should contribute to snapping during digitizing or editing operations through the General Preferences settings. This configuration allows for a streamlined process, ensuring that users do not have to configure snapping settings for every single layer independently.

The design of this system means that if a user sets up snapping for specific layers, those settings are universally applied across the session, promoting efficiency and coherence in the editing process. While users can narrow down specific snapping settings in the snapping toolbar, the foundational setting remains uniformly established and is not layer-specific.