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CRTL, decc$feature_get_name, Description

 *Conan The Librarian

    This function returns a pointer to a null-terminated string
    containing the name of the feature for the entry specified by
    index. The index value can be 0 to the highest allocated feature.
    If there is no feature corresponding to the index value, then the
    function returns a NULL pointer.

    On error, NULL is returned and errno is set to indicate the
    error.

    Also see feature_get_index, feature_get_value, and feature_set_
    value.
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