Hello,

How can I ignore the first bases of index reads with bcl2fastq2 `--use-bases-mask` option?

The index read has 8 cycles, but I want to use only "last 7" of them. illumina bcl2fastq manual only mention about ignoring the last reads, not ignoring the first reads.

I tried the following option but it didn't work.

    --use-bases-mask y151,nI7


<p>You were very close:</p>

<p><code>--use-bases-mask y151n,I7</code></p>
