Alignment text is included in those records when available. For example, if you ask for the best 100 scores and best 25 alignments, the alignment text fields will be null strings for the last 75 records of each query. Similar to comma-delimited, but no quotes are used, and tabs replace comma characters as the field separator. More commonly used in UNIX environments. See also Expectation .
Fractional values are acceptable.
Gap Extension Penalty Default Setting Cost to extend a gap, a 0 in this field means to use the default. The size of the initial word that must be matched between the database and the query sequence. The amino acid substitution matrix to be used for protein comparisons. This keyword allows a score value to be specified as the threshold for displaying scores. Scores below this value are not shown.