What are custom queries in Flowlauncher settings and how to edit it?

[betamigo98]

I understood you can edit any hotkey you want to launch any pluggin, and then even edit hotkeys within a particular pluggin (yt to search in youtube from the web search pluggin for example).

However, I coulnd't understand the keywords and queries in the general setting pane. what is it, what does it do?
See picture below:

So in what language should I wrote the query on the right hand of the table and what does it refer to?

Some more context: I would like to perform more than one websearch at the time so my idea was to edit a batch command like :
chrome.exe google.com/search?q={query} facebook.com/search?q={query}

Thanks for your help!

[VictoriousRaptor]

We use word "query" to describe texts to search in Flow Launcher. Click add, input something and click preview and you will understand better.

[betamigo98]

Ok thank you I'll try that