What is the purpose of "default" target option of zone firewalld.

Hello team! Documentation say https://firewalld.org/documentation/zone/options.html that firewalld zone has option "target" with possible values: ACCEPT|%%REJECT%%|DROP The ACCEPT target is used in trusted zone to accept every packet not matching any rule. The %%REJECT%% target is used in block zone to reject (with default firewalld reject type) every packet not matching any rule. The DROP target is used in drop zone to drop every packet not matching any rule. But firewall-cmd --list-all-zones give me a option "default" for target for some zones. What target "default" mean?