[cairo] default background color

Tamas K Papp tpapp at Princeton.EDU
Thu Jul 26 02:27:35 PDT 2007

My impression is that PDF, PS and SVG surfaces start out as white,
while xlib surfaces have whatever that was in the memory that got
allocated.  Is this correct, or are any of the vector-based surfaces
transparent, it's just that my viewer renders them white?  Can I rely
on this in my code?



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