The following keyboard shortcuts do not work in the partitioner during installation:

All "sub" dialogs except the main dialog:
 * Alt+B (Back)
   only focuses the Back button, pressing Alt+B again focuses the Next button
 * Alt+N (Next)
   only focuses the Next button
 (have not testet Alt+R (Abort) - probably doesn't work either)

"Create Partition Setup" dialog (aka Preparing Harddisk: Step 1):
 * Alt+C (Custom Partitioning(for experts))

Expert Partitioner:
 * Alt+C (Create)
 * Alt+E (Edit)
 * Alt+L (LVM)

Hard Disk dialog (aka Preparing Harddisk Step 2)
 * Alt+E (Use entire harddisk)
   only focuses the button
 * Alt+L (Create LVM...)
   only focuses list entry