On what page?
"Oblique" is a modifier (possibly introduced by Rob Chisnall) to distinguish
a different loading of the common Sheet Bend; he uses it to denote the
case where the ends of the joined ropes lie on opposite (vs same) sides
of the rope. In this form, the knot sets more squarely, and seems to be
more ready to slip, though Rob did some testing with mixed results over
different cordage. It is a form that would correspond to the version of
the Bowline where the end (tail) lies visually outside of the eye of the
knot -- a less commonly seen form. (Of course, the Bowline, an eye knot,
loads three of the four parts, not just two, for different effect.)
--dl*
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