Library /sys$common/syshlp/helplib.hlb  —  CRTL  setjmp  Argument
 env

    The environment buffer, which must be an array of integers long
    enough to hold the register context of the calling function.
    The type jmp_buf is defined in the <setjmp.h> header file. The
    contents of the general-purpose registers, including the program
    counter (PC), are stored in the buffer.
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