LibreOffice Writer, like other word processors, has many different elements. In the early days of word processors, there were only three: pages, paragraphs and characters. The first word processor applications were designed to replace typewriters and create similar documents.

Today’s word processor allow you to work with tables, images, and other objects, as well as text. This Writer sub-section contains articles and videos about paragraphs and characters. A few will be about the page element, which is the element in a word processor that contains all other elements.
This page has links to free articles and those that are only available under the subscription.
Pages
The Page element contains paragraphs, characters, tables, images, and other elements. Its purpose is to structure the document. This includes the paper size it would be printed on, how many columns compose it, and whether it is in portrait or landscape mode.
These settings can be found in the Page dialog or the Page tab in the sidebar. If LibreOffice is set to Tabbed or Tabbed Compact in the Notebookbar, there are Page settings in the Page layout tab. Click here to learn how to activate alternative LibreOffice user interfaces.
Paragraphs
A paragraph is a key element for all documents. These include more than traditional body text paragraphs that compose a novel or news article. They also include numbered and bulleted lists, headlines, and standout quotations.
Like the page element, there is a special dialog for paragraph settings and a tab in the sidebar for styles. In addition to these, there are settings in the Formatting toolbar, in various places in the other user-interface toolbars, and there is a Styles menu that contains items for several different kinds of paragraphs.
Characters
This is the smallest most basic element that composed paragraphs and documents. They are also the element with the most settings.
Like the other two, there is a special dialog. There are also settings in the Formatting toolbar and toolbars in the other user interfaces.
The character level also has several ways to find text in a document to change it :
Finding text and objects in a document

Finding a word, phrase, or a string of characters in document is made simple for users with the Find toolbar. It is opened through the Edit menu of Writer, Ctrl F (or Cmd F for Mac users), and the Edit menus in the Groupedbar Full and Groupedbar Compact user interfaces.
It does not have as many features as the Find and Replace dialog. If you are a subscriber, click here for a tutorial on the Find toolbar.