Docs: specified range of values for guc extra_float_digits
</thead>
<tbody>
<row>
- <entry colname="col1">integer</entry>
+ <entry colname="col1">integer (-15 to 3)</entry>
<entry colname="col2">0</entry>
<entry colname="col3">master<p>session</p><p>reload</p></entry>
</row>
