The names of annotation lines in the opened ACNUC database is
returned by countfreelists, they are forced to upper
case letters by prepgetannots when supplied with the
what argument.
For the EMBL/SWISSPROT format, keys are: ALL, AC, DT, KW, OS, OC, OG, OH,
RN, RC, RP, RX, RA, RG, RT, RL, DR, AH, AS, CC, FH, FT, SQ, SEQ.
For GenBank: ALL, ACCESSION, VERSION, KEYWORDS, SOURCE, ORGANISM,
REFERENCE, AUTHORS, CONSRTM, TITLE, JOURNAL, PUBMED, REMARK, COMMENT,
FEATURES, ORIGIN, SEQUENCE.
For FT (embl, swissprot) and FEATURES (GenBank), one or more specific
feature keys can be specified using lines with only uppercase and such as
FEATURES|CDS
FT|TRNA
Keys ALL and SEQ/SEQUENCE stand for all annotation and sequence lines, respectively.
For the scan operation, key ALL stand for the DE/DEFINITION lines,
and SEQ/SEQUENCE cannot be used (annotations but not sequence are scanned).