1 2 3 4 5 6 7 | typedef enum {
SAF_FSETS_TOP=1, /* find the top-level from the given set */
SAF_FSETS_BOUNDARY, /* find the boundary of the given set */
SAF_FSETS_SUBS, /* find the immediate subsets of the given set */
SAF_FSETS_SUPS, /* find the immediate supersets of the given set */
SAF_FSETS_LEAVES /* find all the bottom most sets in the tree rooted at the given set */
} SAF_FindSetMode
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