Thank you for the image of the page (190). The note at the bottom of the page explains the significance of the shaded hydrogen atoms. They are enlarged and shaded only for the benefit of seeing (visually) which hydrogen atom is the one being shifted. I suggest marking these four hydrogen atoms with a general reference indicator from the Nemeth Code and explaining in a TN "shaded hydrogen atoms are marked with a general reference indicator (4, 12456)."
To keep the bond between H and O or H and N uninterrupted (unspaced), the reference indicator can either precede or follow the H atom, with a blank cell between it and the H. Examples: