Create Layer Break Position Padding

[dbminter]

When the Create Layer Break dialog opens, there's a listing called Padding where it is something like, say, 10.  What exactly does Padding mean?  10 what? 

[LIGHTNING UK!]

Sectors

[dbminter]

What is the size of a sector on a DVD+R DL?  Is it still 512 bytes from back in my days of a magnetic platter? 

[LIGHTNING UK!]

No, it's 2048 for DVD and BD media.