• Returns the first N elements of the list
• Useful in inspecting the beginning of a long list

Example:
  (FIRST-N 5
     (FOR-EACH protein IN (COMMON-ORTHOLOGS-OF *loaded-organisms* PRIMARY S6803)
            AS gene = (GENE-NAMED protein)
            AS description = (DESCRIPTION-OF gene)
            AS coords = (GET-ELEMENTS (from to) FROM gene)
       COLLECT (LIST gene coords description)))
:: 1589 common orthologs found
    ((#$S6803.slr1099 (195685 196305) "3-octaprenyl-4-hydroxybenzoate carboxy-lyase")
    (#$S6803.sll0272 (2104439 2104864) "hypothetical protein")
    (#$S6803.sll0017 (2471954 2473255) "glutamate-1-semialdehyde aminomutase")
    (#$S6803.slr0228 (2529009 2530892) "cell division protein FtsH")
    (#$S6803.sll7034 (31037 31369) "hypothetical protein"))