Let me go back to my original need and clarify:
My typical data is 8 bit, and files can be large.
Typical problem:
85 88 87 90 92
85 256 88 92 93
85 256 256 95 96
86 87 89 93 95
Where the 256 represents a hole in the data.
The data could of course be represented just as easily by a data list
A 2 dimensional Bezier fill would be a very nice feature
