The opening edge of a book; the right hand side when the closed book is viewed from the front.
Outer margin of a page opposite side to spine.
The MARGIN between the outside of the TYPE PAGE and the edge of the PAGE. The fore-edge is on the right of a RECTO and the left of a VERSO.
edges of the pages as viewed when book is closed
the page edge opposite the bound edge
the edge of the book parallel to the spine.
The front edge of the book; the last part you see before you open it
The front edge of the text block
the right-hand edge of a book when opened, opposite the spine.