the format of a system file.
System files use four data types: 8-bit characters, 32-bit integers,
-64-bit integers,
+64-bit integers,
and 64-bit floating points, called here @code{char}, @code{int32},
@code{int64}, and
@code{flt64}, respectively. Data is not necessarily aligned on a word
int32 rec_type;
int32 label_count;
-/* @r{Repeated @code{label_cnt} times}. */
+/* @r{Repeated @code{n_label} times}. */
char value[8];
char label_len;
char label[];