An error is raised if the data could not be converted. Next is unified with the start position for the next record. The returned record does not contain the terminating record-separator. Searches the table for records matching Fields . Fields is a list of field specifiers.
Options is a list of options to specify the search.
Uses prefix search with the specified ordering table. This requires linear search of the table. Equivalence using the given table. The possible option list is ignored. If a match is found on the remaining fields, the variable is unified with the value found in the field.