Either number may be used in addresses. Sometimes, businesses will use both numbers to avoid confusion, usually putting the descriptive (or registration) number first: "Hlavní 20/7". The two (or three) types of numbers are commonly distinguished by colour of the sign. Each municipality can have its own traditional or official rules and colours. In Prague and many other Bohemian cities, descriptive numbers are red, orientation numbers are blue and "evidential" numbers are green or yellow or red. In many Bohemian municipalities, descriptive numbers are blue, black, or are not unified. In Brno and some Moravian and Slovak cities, descriptive numbers are white-black signs, orientation numbers are red-white signs. Many cities and municipalities have different rules.

^ Some books have several codes in the first block: e.g. A. M. Yaglom's Correlation Theory..., published by Springer Verlag, has two ISBNs, 0-387-96331-6 and 3-540-96331-6. Though Springer's 387 and 540 codes are different for English (0) and German (3); the same item number 96331 produces the same check digit: 6. Springer uses 431 as their publisher code for Japanese (4) and 4-431-96331-? would also have check digit ? = 6. Other Springer books in English have publisher code 817, and 0-817-96331-? would also get check digit ? = 6. This suggests special considerations were made for assigning Springer's publisher codes, as random assignments of different publisher codes would not lead the same item number to get the same check digit every time. Finding publisher codes for English and German, say, with this effect amounts to solving a linear equation in modular arithmetic.
ISBNs are sold in blocks of 10, 100, and 1000. When purchasing ISBNs, we recommend that you estimate the amount of publications you will be publishing within the next five years, and select the block that best suits your needs. It is always best to select the block that will last you for a few years because you will be able to maintain one publisher prefix, and minimize the unit cost per ISBN. When purchasing a larger block of ISBNs, the price per ISBN decreases.

I have a document where in I have to make two kinds of page numbering, A catalog (individually made) which should always start at page 1, and the other is a compiled version where the pages should be a continuous page. They both have the same content but with different output so I tried using layers, but fail to set the page numbering to auto. because setting them would affect both layers.


A nested list is a numbered or bulleted list with subordinate (usually indented) numbered or bulleted lists. Rather than just a list of numbered items (1,2,3...), a nested list may have item 1, then indented items numbered a,b,c or i,ii,iii or some other numbering method before the main number 2. With numbering styles you can achieve any combination of numbering formats you want.
The Standard Book Numbering (SBN) code is a 9-digit commercial book identifier system created by Gordon Foster, Emeritus Professor of Statistics at Trinity College, Dublin,[3] for the booksellers and stationers WHSmith and others in 1965.[4] The ISBN configuration of recognition was generated in 1967 in the United Kingdom by David Whitaker[5] (regarded as the "Father of the ISBN"[6]) and in 1968 in the United States by Emery Koltay[5] (who later became director of the U.S. ISBN agency R.R. Bowker).[6][7][8] numbering using indesign
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