A check digit is a form of redundancy check used for error detection, the decimal equivalent of a binary check bit. It consists of a single digit computed from the other digits in the number. The method for the ten-digit code is an extension of that for SBNs, the two systems are compatible, and SBN prefixed with "0" will give the same check-digit as without – the digit is base eleven, and can be 0-9 or X. The system for thirteen-digit codes is not compatible and will, in general, give a different check digit from the corresponding 10-digit ISBN, and does not provide the same protection against transposition. This is because the thirteen-digit code was required to be compatible with the EAN format, and hence could not contain an "X".

The ISBN registration group identifier is a 1- to 5-digit number that is valid within a single prefix element (i.e. one of 978 or 979),[12] and can be separated between hyphens, such as "978-1-...". Registration group identifiers have primarily been allocated within the 978 prefix element.[34] The single-digit group identifiers within the 978-prefix element are: 0 or 1 for English-speaking countries; 2 for French-speaking countries; 3 for German-speaking countries; 4 for Japan; 5 for Russian-speaking countries; and 7 for People's Republic of China. An example 5-digit group identifier is 99936, for Bhutan. The allocated group IDs are: 0–5, 600–622, 65, 7, 80–94, 950–989, 9920–9989, and 99901–99981.[35] Books published in rare languages typically have longer group identifiers.[36]
In the early/mid 19th century numbering of long urban streets commonly changed (from clockwise, strict consecutive to odds (consecutive) which face evens (consecutive)). Where this took place it presents a street-long pitfall to researchers using historic street directories and other records. A very rare variation may be seen where a high street (main street) continues from a less commercial part — a road which breaks the UK conventions by not starting at 1 or 2. On one side of the main road between Stratford and Leytonstone houses up to no. 122 are "Leytonstone Road". The next house is "124 High Road, Leytonstone".
There are over 160 ISBN Agencies worldwide, and each ISBN Agency is appointed as the exclusive agent responsible for assigning ISBNs to publishers residing in their country or geographic territory. The United States ISBN Agency is the only source authorized to assign ISBNs to publishers supplying an address in the United States, U.S. Virgin Islands, Guam and Puerto Rico and its database establishes the publisher of record associated with each prefix.

One of the harder things to do in Adobe InDesign, surprisingly for a page layout tool, is to create multilevel or outline format numbered lists.  The right way to accomplish this, according to the folks at Adobe, is to create a Style for every level of the list you’d like to have! Here are Adobe’s instructions on how to do so (This content is taken directly from https://helpx.adobe.com/indesign/using/bullets-numbering.html#create_multi_level_lists):
In summary, paragraph numbering is really just an exercise in logic, and this blog post is showing the numbering styles for a very specific project. Your project may be similar, but not exactly the same. You just need to think though the levels and how you want to restart the numbers. I do my best to think it through correctly the first time, set it up, and then try as hard as I can to break it, so that I can find my errors. The good news is that once you get your numbers working, you shouldn’t ever have to think about it again.
In Uruguay, most house numbering starts at a high number among the hundreds or the thousands. The system is similar to the French-Spanish one: when a house is divided the term 'bis' is added with the difference that no single term designates the third: when a house is divided or added between another the term 'bis' is repeated as many divisions have been made or houses added in between, for example '3217 bis bis' corresponds to the third house from the 3217th, and so on, when many houses are merged the lowest number is used, leaving the in-between numbers missing.[19] Also there are cases when no number is assigned, this occurs mostly in peripheral areas inside the cities, low house numbering occurs in small locations and in balneary areas houses are designated by name rather than number.
An SBN may be converted to an ISBN by prefixing the digit "0". For example, the second edition of Mr. J. G. Reeder Returns, published by Hodder in 1965, has "SBN 340 01381 8" – 340 indicating the publisher, 01381 their serial number, and 8 being the check digit. This can be converted to ISBN 0-340-01381-8; the check digit does not need to be re-calculated.
Choose the predefined scheme that's most similar to what you want. For instance, if you want sublevels indented, choose the indented form; similarly, if you don't want sublevels indented, choose the flush left form, as shown in Figure C. Try to make the best choice right now because changing your mind later will present so many problems that starting over will be easier.
See Word's Numbering Explained by John McGhie, MVP - comprehensive and not pretty (Downloadable pdf file in letter size) - Reading this is vital to anyone attempting to use automatic numbering or bullets in a law office setting or other places where the documents are likely to be reused or heavily edited. See also How to Create a Template with a downloadable template with style-based numbering.
The heading here could be anything: affirmative defenses in an answer, articles in a contract, etc. It doesn’t matter; the technique is the same with only slight variations. The result is that you’ll have a heading saved in your Quick Parts that will be numbered correctly, no matter how many items you add or delete. This makes this technique particularly useful in building templates for common documents; because it’s always easier to delete than add, they’ll re-number themselves after editing.
Erica Gamet has been involved in the graphics industry for an unbelievable 30 years! She is a speaker, writer, and trainer, focusing on Adobe InDesign and Illustrator, Apple Keynote and iBooks Author, and other print- and production-related topics. She is a regular presence at CreativePro Week’s PePcon and InDesign Conferences, and has spoken at ebookcraft in Canada and Making Design in Norway. You can find Erica’s online tutorials at CreativeLive and through her YouTube channel. When she isn’t at her computer, she can be found exploring her new homebase of Seattle and the greater Pacific Northwest.
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.[39] Here are some sample ISBN-10 codes, illustrating block length variations.

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Because this document has facing pages, we want to insert page numbers on both the left and right pages. For now, navigate to the bottom-right corner of the right-hand page by zooming in (Ctrl + [Windows] or Cmd + [Mac]). Select the Type Tool (T) from the Tools Panel (Window > Tools) and drag to create a small text frame, resting the top of the frame against the margin.
Warning  Making even minor changes to an outline numbering scheme won't necessarily change the initial position you've selected in the gallery, but rather may create a new gallery position, overwriting an existing one. Because of this problem, attaching numbering to styles is strongly recommended. This is covered in greater detail later in this chapter and in the chapter on Styles.
Over the last few months, we've reviewed Word's numbered list features. Specifically, How to control spacing and alignment in a numbered list in Microsoft Word shows how to control spacing and alignment and How to number headings in a Word 2016 document shows a simple way to number headings. In this article, we'll continue by reviewing Word's Multilevel List feature. Fortunately, it's easier to implement and modify than you might think.
To design a certificate from scratch, you can either start with a completely blank publication or adapt an existing publication. Small-sized publication types, such as business cards, postcards, and labels can be adapted to serve as coupons. Flyers or brochures can be adapted for use as gift certificates. For more information, see Create a publication in Publisher.
Street numbering took off in the mid 18th century, especially in Prussia, where authorities were ordered to "fix numbers on the houses ... in little villages on the day before the troops march in". In the 1750s and 60s, street numbering on a large scale was applied in Madrid, London, Paris, and Vienna, as well as many other cities across Europe.[3] On 1 March 1768, King Louis XV of France decreed that all French houses outside of Paris affix house numbers, primarily for tracking troops quartered in civilian homes.[4][5]

Warning  Making even minor changes to an outline numbering scheme won't necessarily change the initial position you've selected in the gallery, but rather may create a new gallery position, overwriting an existing one. Because of this problem, attaching numbering to styles is strongly recommended. This is covered in greater detail later in this chapter and in the chapter on Styles.

In Genoa, Savona and Florence houses are marked with black (sometimes blue in Florence) numbers; businesses are usually (but not always) given red numbers, giving up to two distinct, numerically overlapping series per street. Those of businesses are denoted in all other writing (documents, online directories, etc.) by the addition of the letter "r" (e.g. "Via dei Servi 21r").

If you have multiple sections in your document, you can change the header and footer for the first page of each section. Say you were writing a book with different chapters and you had each chapter set up in its own section. If you didn’t want the regular header and footer (and page numbers) showing up on the first page of each section, you can just place your insertion point somewhere in that section and then enable the “Different First Page” option.
Where additional buildings are inserted or subdivided, these are often suffixed a, b, c, etc. (in Spain and France, bis, ter, quater). Where buildings are later combined, they may use just one of the original numbers, combine them ("13/15"), or give their address as a range (e.g. "13–17"; not to be construed as including the even numbers 14 and 16). Buildings with multiple entrances may have a single number for the entire building or a separate number for each entrance.
In the example I explained, I was using a list, but did it with un-linked text boxes using “continue from previous number” and “continue numbers across stories.” I’m guessing that there is no way to tell InDesign that even though there are 4 text boxes on the page, that there are two different lists? I’d probably have to just create two threaded stories for that scenario to work.
^ The International ISBN agency's ISBN User's Manual says: "The ten-digit number is divided into four parts of variable length, which must be separated clearly, by hyphens or spaces" although omission of separators is permitted for internal data processing. If present, hyphens must be correctly placed; see ISBN hyphenation definition. The actual definition for hyphenation contains more than 220 different registration group elements with each one broken down into a few to several ranges for the length of the registrant element (more than 1,000 total). The document defining the ranges, listed by agency, is 29 pages.

If you know in advance that you need outline numbering for your paragraphs, you will want to choose the correct format from the Bullets and Numbering dialog box. Applying one of the preset formats to a paragraph or paragraphs that are already bulleted or numbered applies it to the entire list. There is a specific tab for outline numbers — the Outlined Numbered tab.