ONIX Code Lists Issue 36, January 2017
List 147: Unit of usage

Value Description Notes

01 Copies Maximum number of copies that may be made of a permitted extract
02 Characters Maximum number of characters in a permitted extract for a specified usage
03 Words Maximum number of words in a permitted extract for a specified usage
04 Pages Maximum number of pages in a permitted extract for a specified usage
05 Percentage Maximum percentage of total content in a permitted extract for a specified usage
06 Devices Maximum number of devices in ‘share group’
07 Concurrent users Maximum number of concurrent users. NB where the number of concurrent users is specifically not limited, set the number of concurrent users to zero
08 Percentage per time period Maximum percentage of total content which may be used in a specified usage per time period; the time period being specified as another EpubUsageQuantity
09 Days Maximum time period in days (beginning from product purchase or activation)
13 Weeks Maximum time period in weeks
14 Months Maximum time period in months
27 Days (fixed start) Maximum time period in days (beginning from the product publication date). In effect, this defines a fixed end date for the license independent of the purchase or activation date
28 Weeks (fixed start) Maximum time period in weeks
29 Months (fixed start) Maximum time period in months
10 Times Maximum number of times a specified usage event may occur (in the lifetime of the product)
22 Times per day Maximum frequency a specified usage event may occur (per day)
23 Times per month Maximum frequency a specified usage event may occur (per month)
24 Times per year Maximum frequency a specified usage event may occur (per year)
21 Dots per inch Maximum resolution of printed or copy/pasted extracts
26 Dots per cm Maximum resolution of printed or copy/pasted extracts
11 Allowed usage start page Page number where allowed usage begins. <Quantity> should contain an absolute page number, counting the cover as page 1. (This type of page numbering should not be used where the e-publication has no fixed pagination). Use with (max number of) Pages, Percentage of content, or End page to specify pages allowed in Preview
12 Allowed usage end page Page number at which allowed usage ends. <Quantity> should contain an absolute page number, counting the cover as page 1. (This type of page numbering should not be used where the e-publication has no fixed pagination). Use with Start page to specify pages allowed in a preview