10.1 All text shall be prepared  in  one  or  two columns with  justification at the discretion of the manufacturer; however, two columns  are preferred  for  ease of reading. Except for foldout pages and start of chapters, all  pages  shall  be printed  on both  sides. Each chapter shall  be started  on a right-hand  page. When an illustration is required to be  reproduced  horizontally  on a  page,  the top of the illustration shall always be toward the  left  edge  of  the sheet.If  the manual is to be  available  also  on microfilm  or aerofiche,  a  vertical  presentation is  preferred. Even though large illustrations  are laid  out  horizontally  it  is  preferred   to  have indexing  callouts  and titles read vertically. Each  figure  and/or table  shall  be numbered  in  numerical  progression within sections. All figures  and/or  tables  shall  bear  a title with a number. The manufacturer's masthead, publication title,  aircraft  model  and  issue and revision  dates  or  codes  shall  appear on all pages  that  contain text  or illustrations. However, aircraft model number should not be included in engine maintenance manuals.

A normal blank page shall be identified on the preceding page only.

The manufacturer's masthead,  publication  title,  aircraft  model  and issue and revision dates  or  codes  may  be  omitted  from  individual  pages at the option of the manufacturer in small, permanently bound manuals.