Automation allows for reduced processing times and straight-through processing where the incoming invoices are handled without any manual intervention.

If these changes overlap, it may be difficult or impossible to merge, and require manual intervention or rewriting.

Some people hope that further improvements in autoplacers and autorouters will eventually produce good layouts without any human manual intervention.

Response to an event may be automated or may require manual intervention.

It never changes in size, except by manual intervention with special tools.