I figured this one out...
/* __xESOS_USER_ISR(attrib, ivt, ifsr, ifsb, ipcr, ipcb)
*
* This is the generic form for all ESOS registered ISRs. The
following
* is a description of each parameter:
*
* attrib = PIC24 Compiler Name
* ivt = Interrupt Vector Table Address
* ifsr = Interrupt Flag Status Register # (0-4)
* ifsb = Interrupt Flag Status Register Bit # (0-15)
* ipcr = Interrupt Priority Control Register # (0-17)
* ipcb = Interrupt Priority Control Register Bit # (0-15)
* Number given is the right-most bot of the three interrupt
priority bits.
*/