本文介绍如何通过调用不同的服务来改变R1和R0主题的优先级。针对R1主题，需要调用/R1/wmp_control服务；而针对R0主题，则需调用/R1/remote/wmp_control服务。文中还提到了配置文件config.h中指定了主题名称。
To change the priority of some
R1 topic FROM R1, you have to call the service:
/R1/wmp_control
while if you have to change the priority of some R0 topic again FROM R1 you have to call the service:
/R1/wmp_control
while if you have to change the priority of some R0 topic again FROM R1 you have to call the service:
/R1/remote/wmp_control
The parameters you specify, have to include the name of the topics as specified in the config.h file.
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