Back references are optional elements in a page name pattern. Back references help you with linking and naming versioned pages. There are two types of back references:

• Page name back reference—this affects the versioned page prefix. This back reference allows you to set the versioned page name prefix to reflect part of the page name.
• Page number back reference—this affects the versioned page number. This back reference allows you to use two or more wild cards for numbers ([#]) in a page name pattern. This back reference also allows you to add to or subtract from numbers in your contributing page names that are used to define the versioned page number.
  If your refined pages have two or more sets of numbers in the pattern, and you do not use the page number back reference, Prinergy uses the last [#] wild card as the versioned page number. 

Important: Ensure that your versioned page names are not specific to a version. For example, do not create versioned page names such as English_1.pdf and French_1.pdf for refined pages that must be assigned to the same versioned page.

Back reference syntax

A back reference is a wild card with a text descriptor inside the square brackets. You can use addition or subtraction to alter the number, if applicable. For example:

To create a back reference, type the back reference in the appropriate column of the version plan. For example, to create a page number back reference, type the back reference under the Page Number Back Reference column.
Use the addition and subtraction math operators when required.

The following examples show some back reference scenarios and the versioned page names they produce.

Back reference example 1: Page name back reference (correct)

Note: Prinergy LPV automatically uses the [#] wild card as the page number. The result is the same as the following example.

Back reference example 2: Page name and page number back reference (correct)

Back reference example 3: No back references (incorrect)