Library /sys$common/syshlp/dbg$help.hlb DEBUG, Built in Symbols, %HEX  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Specifies that a following numeric literal (or all numeric
    literals in a following parenthesized expression) be interpreted
    in hexadecimal radix.

    Examples:

    DBG> EVALUATE/HEX %DEC 10
    16
    DBG> EVALUATE/DEC %HEX (10 + 10)
    32