The Manuscript Codex * Textblock
SPINE-FOLD

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 spine-folds to create each gathering. Then each of the gatherings is sewn through the nested spine-folds to attach them to each other, thus creating the textblock.
# Single leaves can be guarded together to create a bifolio, in which case the spine-fold appears on the guard. A single leaf can also be hooked-round. The spine fold then appears adjacent to the extension of paper on the side of the leaf.
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UBL OR. 14.600

 

 

AUTHORS: PAUL HEPWORTH AND KARIN SCHEPER