Writer provides these important features:
(i) Templates and styles.
(ii) Page layout methods, including frames, columns, and tables.
(iii) Embedding or linking of graphics, spreadsheets, and other objects.
(iv) Built-in drawing-tools.
(v) Master documents to group a collection of documents into a single document.
(vi) Database integration, including a bibliography database.
(v) Database integration.
(vi) Track changes to document.
(vii) Export to PDF easily.

Corrections can be made in two different ways :
(i) Backspace Key: Deletes the character left of the insertion pointer.
(ii) Delete Key: Deletes the character right of the insertion pointer.

OpenOffice Writer - Word Processor to create text documents
(i) OpenOffice Calc - Spreadsheet to create worksheets.
(ii) OpenOffice Base - Database.
(iii) OpenOffice Impress - Presentation software.
(iv) OpenOffice Draw - Drawing Software.
(v) OpenOffice Formula - Create formula and equations.

Changing the default appearance of the text like changing the font type, size, color, style etc., are called as Text formatting.

(i) Select the required text.
(ii) Select Format ⟶ paragraph.
(iii) The paragraph dialog box appears, click on Indents & Spacing tab.
(iv) In the line spacing drop down, select the required line spacing (there are seven different types of line spacing).
(v) click OK button.

File ⟶ Save
File ⟶ Save As
Ctrl + S

The bullets and numbers can be removed easily.
(i) Select the text where the bullets and numbers are to be removed
(ii) Click on the bullets icon again to remove bullets.
(iii) Click on the numbering icon  again to remove numbering.

There are two different orientations:
(i) Landscape: The width of the document is more than the height. This is best suited for displaying table, professional photos, invitations, album etc.
(ii) Portrait: This is the most common and default orientation. Here, the height of the document is more than the width. Normally books, newspapers will be displayed in this format.

Indent is the distance from the left and right margin of a paragraph. It is used to improve the efficiency and readability of the paragraph and makes the paragraph look more attractive. In paragraphs, an easy way to apply indent for the first line of text can be created by moving the insertion pointer to the begining of the line and pressing the tab key on the keyboard. There are two ways to apply indents:
Using Icons Using Dialog Box
Using Icons:
(i) Increase Indent Icon  The increase indent icon controls the space between the paragraph and the left margin. Each click on the Increase indent icon moves the paragraph 1/2 inch away from the left margin.
(ii) Decrease Indent Icon  This is reverse of increase indent. It undoes the indent applied by increase indent. Each click on the Decrease indent icon moves the paragraph 1/2 inch away from the right margin.
Using Dialog Box:
(i) Format ⟶ Paragraph displays the paragraph dialog box as shown in Figure 6.20, select the Indent & Spacing tab which has the indent group which has three options.
(ii) Left Indent: This is the default indent where a paragraph is moved away from the left margin. In the paragraph dialog box, in the "Before Text" spin box, enter a value which moves the paragraph away from the left margin.
(iii) Right Indent: This is another type of indent which moves the paragraph away from the right margin. Enter a value in the "After text" spin box of the paragraph dialog box, which results in right indent.
(iv) First Line Indent - A first-line indentation indents the first line of the paragraph. It is the most common way to start a new paragraph. This indent can be applied by Format ⟶ Paragraph ⟶ Indents & Paragraph tab, select first line option in the indent group, enter a positive value which results ill first line indent.

The header is a section of the document that appears in the top margin, while the footer is a section of the document that appears in the bottom margin of the page. Typically, headers display the title or chapter name, author name of a document while the footer displays the page number, date, time etc which gets displayed on all the pages automatically.
To Insert Headers and Footers:
(i) Select from the main menu Insert -> Header -> Default
(ii) The header text area is separated from the normal text are (a)
(iii) Enter the text that is to be repeated in all pages or Select Insert -> Fields -> Title.
(iv) The Header dialog box is displayed
To insert a Footer, the steps are as given below:
(i) Select from the main menu Insert -> Footer -> Default
(ii) Piace the cursor in the Footer part of the page.
(iii) Select Insert -> Fields -> Page Number.
Once the headers and footers are given in the first page, the same text appears in all the pages.
Inserting and Formatting Page Numbers:
Once the Header/footer area is enabled, the page numbers can be inserted by performing the following steps:
(i) position the cursor where you want to insert the number
(ii) choose Insert -> Fields -> Page Number
(iii) The page number appears with a gray background
Normally, the page numbers appear as 1,2,3 ..... , To change the numbering style, the following sequence of steps can be performed:
(i) Position the cursor where the page number has to appear
(ii) Select Format -> page, which will bring the page style dialog box
(iii) Select page Tab
(iv) In the Layout settings, select the format drop down combo box
(v) Select the desired style and click OK button