{ return NS_ERROR_NOT_IMPLEMENTED; }
{ if (!mIsPositioned) return NS_ERROR_NOT_INITIALIZED; if (!IsIncreasing(mStartParent, aStartOffset, mEndParent, mEndOffset)) return NS_ERROR_ILLEGAL_VALUE;  mStartOffset = aStartOffset; return NS_OK; }
nsresult nsRange::SetStartOffset(PRInt32 aStartOffset){ return NS_ERROR_NOT_IMPLEMENTED; }