In Release Notes for 7.3.0.Beta, there's a wrong attribute name in new features section:

New Features -> Management CLI -> Disable Output Paging

Currently the text says:
"... You can now disable this behavior ... by setting the output-paging element to true in the EAP_HOME/bin/jboss-cli.xml file."

However, the correct text should be
"... You can now disable this behavior ... by setting the output-paging element to false in the EAP_HOME/bin/jboss-cli.xml file."

Disabling the paging is by setting output-paging to false, not true, as the current text says.

This issue was caused by copying the text from EAP CD15 release notes that already contained this mistake.