How to show/hide header and sidebar in Blender

This is just a Tips.

GOAL

To hide/show headers and side bars in Blender.

Environment

Blender 2.83
Windows 10

How to hide headers

Right-mouse-click the header and check buttons off.

How to display header

Click dropdown button at the boundary of the editor.

You can show Sidebar in the same way.

How to hide sidebar

Method1. Use View menu and check click View > Sidebar off.

You can hide Toolbar, Sidebar, Toon Settings in the same way.

Method2. drag and drop the edge of sidebar to the right

Where is user preference file of Blender

GOAL

To find preference file of Blender and view the contents of the file.

Environment

Blender 2.83 (I’m using 2.83 because it is LTS)
Windows 10

What is saved in preference files?

There are two areas where Blender’s defaults are stored:

The Preferences file stores keymap, add-ons theme and other options.

The Startup File stores the scene, Workspaces and interface which is displayed at startup and when loading a new file (File ‣ New).

from Blender2.91 manual