Work Area Components:

1. Titlebar and Control button
2. Quick Access Toolbar
3. Tabs, Ribbon and Groups
4. Ruler
5. Work Area
6. Scrollbar
7. Status bar
8. Magnifier

Magnify Page View: Ctrl+Scroll up
reduce magnification : Ctrl+Scroll Down

Page Setup
layout Tab–>Page Setup

Line or Paragraph Spacing:
Home Tab–>Paragraph Group–>Line Spacing

Increase Left Indent: Tab (or) Ctrl+M

Bold: Ctrl+B
Underline: Ctrl+U

Center Align: Ctrl+E

Ms-Word File format version 2007: .docx