Infilling tools have been around since 2003 (e.g., see Microsoft's "Smart Erase" in Digital Image Pro, http://www.microsoft.com/athome/morefun/photoedit.mspx ht

Infilling tools have been around since 2003 (e.g., see Microsoft's "Smart Erase" in Digital Image Pro, http://www.microsoft.com/athome/morefun/photoedit.mspx http://www.microsoft.com/athome/morefun/photoedit.mspx). Nice to have it built in, though. (And it keeps getting faster and better, of course.)