Why in the text paragraphs
The paragraph (or red line) is a structural element that is logically complete and includes the topics of the main text. It is an essential element of any document, help text does not merge into a single whole, and to have a logical designed structure. From the point of view of computer programs, a paragraph is any text ending by pressing enter.
Rules for changing the width of the paragraph
To change the width of the paragraph indent in Word document format in one of two ways. First, you can select text with the left mouse button, then right button click on the selected text. In the window that opens, choose "Paragraph", then "Tab". You can see that the default indentation of 1,25 cm paragraph should be a different size, you need to enter the data and save the changes. Now the indentation will be as needed. This is the way in which a paragraph will be placed accurately to the millimeter.
The second method changes the red line is implemented by using the "line" tool, located on the toolbar. The line is on the left and top, but it might be hidden. To activate the tool click the left mouse button in the upper right corner on the small square will appear soon in scale and marker on it.
When you hover over the marker, or the slider horizontal ruler you will see the tooltip "indent from left", "projection" and "first line indent". You need to change the width of the paragraph indent for the first line. Fix the mouse cursor near the first line, click the left mouse button on the marker at the top where it shows "first line indent" and with the ruler you can set the desired size. If the text is typed, but paragraphs, you need to select all the text completely, then again use the slider. The paragraphs of the right size will appear around the text. It's more of a visual method of forming a paragraph, less accurate than the previous one.
The indentation can be positive, zero (when the alignment of the text in the center) and negative when the first line stands closer to the left edge of the sheet. Paragraph indents in Word documents, measured in inches.
You need to know
It is important to remember that indention in any case it is impossible to make "space" key. In this case future formatting problems arise, since the strings can "theseats". Proper execution of paragraphs later will save time when rebuilding the document.