clarify doc

Pat3ickI · Mar 7, 2017 · ee634c2 · ee634c2
1 parent 7feecc2
commit ee634c2
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/interface.go b/interface.go
@@ -107,6 +107,8 @@ type Picture interface {
  Bounds() Rect
 
  // Slice returns a sub-Picture with specified Bounds.
+ //
+ // A result Slice-ing outside the original Bounds is unspecified.
  Slice(Rect) Picture
 
  // Original returns the most original Picture (may be itself) that this Picture was created