/usr/share/idzebra-2.0/tab/urx.chr is in idzebra-2.0-common 2.0.59-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | # URX character map
#
# Basic character(s)
lowercase {0-9}{a-y}üzæäøöå/.~:-,#!?=<;\{|}+
uppercase {0-9}{A-Y}ÜZÆÄØÖÅ/.~:-,#!?=>;\{|}+
# Breaking characters
space {\001-\040}
|