An external command . forced - It will override the currently clock source. csmDomainExtCmdParam determines the desired clock source. This clock source will be selected. This override is applicable until device reset or 'clear' value is Set. manual - It will override the Priority. csmDomainExtCmdParam determines the desired clock source. This clock source should be selectable. CSM might not perform the override action, for example when the quality of csmDomainExtCmdParam is lower than the quality of csmDomainSysSourceId. This override is applicable until device reset or 'clear' value is Set. clear - clears the Forced or Manual modes and causes the Clock Selection Logic to perform the automatic Clock Selection. After Setting each of the values above, Agent will turn the value automatically to off(2). Default=off (2).