Query Fields Stage
The Query Fields query pipeline stage defines common Solr query parameters for the edismax query parser. If using a less-than sign (<) with DisMax, it must be escaped using a backslash.
An alternative to this stage is the
Additional Query Parameters stage.
Configuration
When entering configuration values in the UI, use unescaped characters, such as
\t for the tab character. When entering configuration values in the API, use escaped characters, such as \\t for the tab character.