How to automate the cleanup of a PCB layout for a redesign in KiCad using Python?
Automating the cleanup of a PCB layout for a redesign in KiCad can be done using Python scripting. The given script removes all extraneous drawing elements from the board, preparing it for a new design phase:

```python
import pcbnew

board = pcbnew.GetBoard()
for dr in board.GetDrawings():
   board.Delete(dr)

pcbnew.Refresh()
```

This script is effective for PCB layouts that require significant revisions or when it's more efficient to remove all non-essential graphical elements before starting the redesign process.