The Manuscript Codex * Textblock
FOLD-LINE

The crease at the center of a sheet of the support material created when that sheet is folded in two to form a bifolio. A group of bifolios are nested together at their fold-lines to create each gathering. Then each of the gatherings is sewn through the nested fold-lines to attach them to each other, thus creating the textblock.
 
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UBL OR. 1460

 

 

AUTHORS: PAUL HEPWORTH AND KARIN SCHEPER