Add specific codes to coupons to track customer responses     Use different codes for your different marketing messages, advertisements, or promotions. These codes will enable you to keep track of how customers learned about your offer. The more you learn about who is drawn to your business and what attracts customers' attention, the better you can focus future marketing efforts.
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.
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It sure is possible! Numbering and Section options are available in the Pages Panel menu. These options allow you to define what page starts a section and how it should be numbered. Insert a Current Page Number marker (Type>Insert Special Character>Markers>Current Page Number) in a text frame on a page or master page (recommended), select the first page of your section, open the Numbering and Section Options dialog, and enter 200 in the Start Page Numbering at: field. Hope this helps!

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.

When a numbered plot contains multiple buildings, they are assigned an additional component of the street address, called корпус (building), which is usually a sequentially assigned number unique within the plot (but sometimes contains letters as in 15а, 15б, 15в and so on). So, a Russian street address may look like Московское шоссе, дом 23, корпус 2 (Moscow Street, plot 23, building 2), or Льва Толстого, дом 14б (Leo Tolstoy Street, plot 14, building b).
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