Update CIPOS/CIEND doc

app/node-app/public/pages/doc.md

@@ -233,5 +233,6 @@ Open questions:
    2. assign it the first reference genome's value of the data structure.
    3. ask the Beacon team if they can make this optional property.
    4. ask the Beacon team if they can replace the property type by a list of strings (instead of a string).
-   5. clarify CIPOS and CIEND in VCF v4.2 for DUP/DEL (i.e. CIPOS=-500,500;CIEND=-500,500)
-     - currently, we belief that this is a range, e.g. +/- 500 for POS and END
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+   5. clarify CIPOS and CIEND in VCF v4.2 for DUP/DEL (i.e. CIPOS=-500,500;CIEND=-500,500)- OK
+     * It's basically a range. See example and our interpretation here: https://github.com/samtools/hts-specs/issues/132
+     * For arrayMap, we need to define that interval for POS and END position. Michael suggested something like 0.5 * average probe distance (would be in order of kB)
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