xxxx - you can change this in the previewTemplate option

.icon-AGP:

.icon-BAM:

.icon-CML:

.icon-CRAM:

.icon-CSV:

.icon-DOC:

.icon-FASTA:

.icon-FASTQ:

.icon-FLAT:

.icon-GFF:

.icon-IMG:

.icon-JSON:

.icon-MDL:

.icon-OBO:

.icon-OWL:

.icon-PDF:

.icon-PSI-MI_JSON:

.icon-PSI-MI_TAB:

.icon-PSI-MI_XML:

.icon-Postscript:

.icon-RD:

.icon-RDF_XML:

.icon-RXN:

.icon-SDF:

.icon-TSV:

.icon-TXT:

.icon-XML:

.icon-ZIP: