By using variable block lengths, registration agencies are able to customise the allocations of ISBNs that they make to publishers. For example, a large publisher may be given a block of ISBNs where fewer digits are allocated for the registrant element and many digits are allocated for the publication element; likewise, countries publishing many titles have few allocated digits for the registration group identifier and many for the registrant and publication elements. Here are some sample ISBN-10 codes, illustrating block length variations.
Inserting page numbers into your InDesign document is quick and simple. The first thing to realise is that InDesign numbers pages according to the page numbers listed in the Pages Panel (Window > Pages). Unless you want to spend the time manually inserting individual page numbers to override this, you should understand how to define sections in your document (see Step 2, below). numbering