Merge pull request #45 from himorin/himorin/erratum-18

added note into text of section 2.6.1(c)

index.html

@@ -1655,9 +1655,9 @@ <h4 id="positioning_of_running_heads_and_page_numbers">
           <p its-locale-filter-list="ja" lang="ja"> 縦組の書籍又は横組の書籍において，ノンブル又は柱を横組にして配置する場合は，左ページでは，基本版面の左端の延長線にノンブル又は柱の先頭をそろえて配置するか，基本版面の左端の延長線から基本版面の文字サイズの全角アキだけ右に寄せた位置に配置する．右ページでは，基本版面の右端の延長線にノンブル又は柱の末尾をそろえて配置するか，基本版面の右端の延長線から基本版面の文字サイズの全角アキだけ左に寄せた位置にノンブル又は柱の末尾をそろえて配置する．</p>
         </li>
         <li id="id101">
-          <p its-locale-filter-list="en" lang="en">Regardless of the direction of text in a book, when arranging running heads and page numbers together on the same horizontal line, the space between the running head and the page number
-            should be double or one and a half times the character size of the running head. On the left page, the page number should be set at the left side and the running head should be set at the right side. On right-hand pages, the page number should be set at the right side and the running head should be set at the left side. The exact positions of the page numbers are given by the instructions above (see b).</p>
-          <p its-locale-filter-list="ja" lang="ja"> 縦組の書籍又は横組の書籍において，同一位置にノンブル及び柱を横組にして並べて配置する場合は，ノンブルと柱との空き量を柱に使用する文字サイズの2倍アキ又は1.5倍アキとする．また，柱とノンブルの位置は，左ページではノンブルを左側に，柱を右側に配置し，右ページではノンブルを右側に，柱を左側に配置する．この場合のノンブルの左右位置は，上記bに従う．</p>
+          <p its-locale-filter-list="en" lang="en">Regardless of the writing direction of the text in a book, when arranging running heads and page numbers together on the same horizontal line (such as positioning the running head immediately adjacent to the page number at the left side on left pages), the space between the running head and the page number
+            should either be double or one and a half times the character size (embox size) of the running head. On left-hand pages, the page number should be set on the left side, and the running head should be set on the right side. On right-hand pages, the page number should be set on the right side and the running head should be set on the left side. The exact positions of the page numbers are given in the instructions above (see b).</p>
+          <p its-locale-filter-list="ja" lang="ja"> 縦組の書籍又は横組の書籍において，同一位置にノンブル及び柱を横組にして並べて配置する（例えば，左ページで左寄せして，ノンブルに続けて柱を配置する）場合は，ノンブルと柱との空き量を柱に使用する文字サイズの2倍アキ又は1.5倍アキとする．また，柱とノンブルの位置は，左ページではノンブルを左側に，柱を右側に配置し，右ページではノンブルを右側に，柱を左側に配置する．この場合のノンブルの左右位置は，上記bに従う．</p>
         </li>
         <li id="id102">
           <p its-locale-filter-list="en" lang="en">When positioning running heads and page numbers vertically to the <a href="#term.fore-edge" class="termref">fore-edge</a> of the kihon-hanmen in a vertically set book  (see spread (e) in [[[#fig1_28]]], for example), the minimum horizontal distance from the kihon-hanmen should be the same as that of the <a href="#term.line-gap" class="termref">line gap</a> of the kihon-hanmen.