Make it possible to select text and using the "copy to clipboard" in a "box"

Can you please make this box also "useable" in your app? I hate that you can't select a single text in the app, I don't want always to copy the entire message, please change that and let use copy ONLY the content of a "box".

At PC can you easily click on the clipboard icon and it's saved, on mobile you have to copy ALL then you need to paste it somewhere and edit it to get the code which you want :/