to 6. 3.9.4. (former), renumber as paragraphs 6.3.7. to 6.3.8.4. respectively. Paragraph 6.4.1., amend to read:
to 6. 6.1., amend to read (including the addition of two tables):
to 6. 1.1., amend to read (including "minimum" in footnote 3): "6.1.
to 6. 4.3.6., shall be deleted.
to 6. 10.2. (former), shall be deleted
to 6. 15.13.2.4. (former), renumber as paragraphs 6.17.4. to 6.17.13.2.4. Insert new paragraphs 6.17.14. and 6.17.14.1., to read: "6.17.14. Provisions regarding non-return valves
to 6. 2.3., shall be deleted. Paragraph 8, amend to read:
to 6. 3.9.4. (former), renumber as paragraphs 6.3.7. to 6.3.8.4. respectively.
to 6. 1.5.2., amend to read:
to 6. 5.5.2., including the figures, amend to read: "6.5.5. Geometric visibility
