-struct casereader;
-struct dictionary;
-struct spreadsheet_read_info;
-struct spreadsheet_read_options;
-
-struct spreadsheet *gnumeric_probe (const char *filename);
-
-const char * gnumeric_get_sheet_name (struct spreadsheet *s, int n);
-
-const char * gnumeric_get_sheet_range (struct spreadsheet *s, int n);
-
-void gnumeric_destroy (struct spreadsheet *);
-
-struct casereader * gnumeric_make_reader (struct spreadsheet *spreadsheet,
- const struct spreadsheet_read_info *gri,
- struct spreadsheet_read_options *opts);