Variables that must retain value across resets (watchdog timers, state machines):
HI-TECH C Compiler for PIC10/12/16 MCUs V9.83: A Comprehensive Guide and Download Overview Hi-tech C Compiler For Pic10 12 16 Mcus V9.83 Download
technical support for the HI-TECH C compiler, recommending that users migrate to Variables that must retain value across resets (watchdog