1Here is a sample session with <b>maskambignuc</b> 2<p> 3 4<p> 5<table width="90%"><tr><td bgcolor="#CCFFFF"><pre> 6 7% <b>maskambignuc </b> 8Mask all ambiguity characters in nucleotide sequences with N 9Input (gapped) nucleotide sequence(s): <b>ambignuc.fasta</b> 10output sequence(s) [ambignuc.fasta]: <b></b> 11 12</pre></td></tr></table><p> 13<p> 14<a href="#input.1">Go to the input files for this example</a><br><a href="#output.1">Go to the output files for this example</a><p><p> 15