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#ifndef NAV_H
#define NAV_H
#include "doc.h"
#define HIST_MAX 32
struct nav_state {
size_t histc, cur_doc;
struct doc histv[HIST_MAX];
size_t cur_ofs[HIST_MAX];
};
void nav_init(struct nav_state *ns);
void nav_fini(struct nav_state *ns);
void nav_pg_up(struct nav_state *ns);
void nav_pg_down(struct nav_state *ns);
void nav_redraw(struct nav_state *ns);
#endif
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