Relax Mode is a nice revision capability that is available in Inventor 2017 and 2018. Relax Mode allows you to make a revision to a fully constrained sketch by dragging the sketch into a new shape. Relax Mode deletes the appropriate sketch constraints as you drag the sketch. The user no longer has to think about how many constraints to delete to accomplish the new revision.
If you work with large projects in AutoCAD Electrical, you probably are aware that an edit to one drawing in your project may take a while to complete. AutoCAD Electrical will search the project looking for references to that particular edit. For example, if you edit a pushbutton on a schematic, AutoCAD Electrical will search the project for a panel that contains that pushbutton so that the panel can be updated to match the schematic. If you make many edits in one day’s timeframe on a large project you will be waiting for Electrical to catch up with all of the references.