Full text search in Elasticsearch - what goes through the analysis?

Question

From what I have heard, with a full text search query both the data stored in the text field as well as the query value goes through the analyzer. I am not sure what to mean by the fact that the query value also goes through the analysis.

In elasticsearch documentation I didn't find any information about it, for example - definition of default analyzer: https://www.elastic.co/guide/en/elasticsearch/reference/7.16/analysis-standard-analyzer.html

Text analysis: https://www.elastic.co/guide/en/elasticsearch/reference/current/analysis.html

Full text queries: https://www.elastic.co/guide/en/elasticsearch/reference/current/full-text-queries.html

In the documentation it says:

Elasticsearch performs text analysis when indexing or searching text fields

So only the data in the text field is mentioned. So is it true that the query value also undergoes analysis? I can't find information if this is the case.