Several places under 8.4.4.2 have 2 different descriptions for neighbouring samples locations:

In sessions,

• 8.4.4.2.1 &
• 8.4.4.2.2,

reference samples and neighbouring samples are described as:
p[ x ][ y ] with x = −1, y = −1..nT*2−1 and x = 0..nT*2−1, y = −1

In sessions,

• 8.4.4.2.3,
• 8.4.4.2.4,
• 8.4.4.2.5 &
• 8.4.4.2.6

neighbouring/filtered samples are described as:
p[ x ][ y ], with x, y = −1..2*nT−1

For clarity and consistency of the text, the descriptions should follow as in 8.4.4.2.1 and 8.4.4.2.2.