Once LibreOffice installed on any computer, first thing I do is install a series of Extensions ,One of the most important may be the spelling checker, Which does not come by default.
To install simply download the extension from the page of OpenOffice. Once on our team, we opened LibreOffice, we Tools - Extensions and click on Add, go to the directory where we downloaded and installed, first accepting the conditions.
If we want to check off the words that are spelled correctly while composing the text, we mark the button Automatic review and we are underlined.
We can create our documents and correct spelling in case of an error or know how to spell certain words.