The first copy found is used. Run searches only. The program looks first in the calling directory, then in the directory in which the program resides. Indicate user's email address. Useful if some searches finshed but others didn't during the previous invocation.
Mailboxes can be 'true' mailboxes, or files holding partial results of previous searches.
Interactively enter searching options. Specify a log file. DNA masking bp. Dedault is 'X'. Use -m alone to indicate no masking bp.