The NCBI files have a file extension of .cgi (what that means, I have no
idea). They appear to be simple text files with each EST within them in
fasta format. Each EST begins on a new line with the > symbol, then some
text, and then the sequence starting on a new line. There is no trace
data associated with them. Some of the files contain 100 or more ESTs,
so copying and pasting into separate files could get tedious.