You can use Redo
for more than 60 features and
commands in parts. Previously, Redo was only
available in sketches.
You can reverse multiple Undo
changes by clicking 
next to Redo, and selecting an item on the list.
Not all part commands support
Redo in SOLIDWORKS 2021. Exceptions include:
- Annotations
- Hole features
- Instant3D modifications
- Mold tools
- Sheet Metal
- Weldments