(Auszug aus "XSL-FO ― Die Referenz" von Manuel Montero Pineda & Steffen Herkert, 2016, dpunkt.verlag)
Category Columns >> Column Rule
axf:column-rule-display specifies whether to also display a rule at the place where column gaps do not exist..
|Value:||gap | end | all|
|Applies to:||fo:region-body, fo:block-container|
Values have the following meanings.
|gap||Displays a rule only between the existing columns.|
|end||Displays a rule at the end side of the existing column. However, the most end side of the column is not included.|
|all||Displays all rules between the non-existing columns at the end of a page, etc.|
Suppose contents are only in the left column of the three columns as shown in the figure on the right. When gap is specified, rules are not displayed at all. When end is specified, a rule (1) is displayed, when all is specified, rules (1) and (2) are displayed.