Information on the indexing section
This section allows you to configure how content is indexed for Examine.
When indexing content, each property contained within certain complex editors are indexed as separate fields by default. These complex editors include:
Block List
Block Grid
The complex editors are also indexed to their own separate fields, which then contains "the sum" of all properties contained within.
In some cases this yields a lot of fields in the index, which can lead to errors when performing searches. Changing this setting to false can mend that issue. It prevents each contained property from being written to the index in its own field.