The Standard bar is available in every LibreOffice application.
The Formatting bar contains basic commands for applying manually formatting.
Use the Tools bar to access commonly used commands.
Use this bar to enter formulas.
In Outline View, the Outline bar contains frequently used editing tools. Click the arrow next to an icon to open a toolbar that contains additional commands.
The Picture bar is displayed when you insert or select a picture in a sheet.
The Drawing Object Properties Bar for objects that you select in the sheet contains formatting and alignment commands.
The Text Formatting Bar that is displayed when the cursor is in a text object, such as a text frame or a drawing object, contains formatting and alignment commands.
The Page Preview Bar is displayed when you choose File - Page Preview.
The Status Bar displays information about the current sheet.
Click the arrow next to the icon to open the Insert toolbar, where you can add graphics and special characters to the current sheet.
The Classification bar contains tools to help secure document handling.
The Classification toolbar contains listboxes to help in selecting the security of the document, according to the BAF category policy and BAILS levels. LibreOffice will add custom fields in the document properties (File - Properties, Custom Properties tab) to store the classification policy as document metadata.
Go to menu View - Toolbars and select Classification