When you want to quickly insert a horizontal line into your Word document you do not have to type the line manually or even go to the Borders and Shading dialog box in the Ribbon. All you have to do is type three characters on your keyboard and a horizontal line will appear. There are six different shortcuts that create six different horizontal lines. I use this all the time. This is one of those shortcuts that really saves alot of time, and that's what its all about. What do you type to make a quick horizontal line in Word? --- (3 dashes) and then press enter = This will give you a straight thin line.___ (3 underscores) and then press enter = This will give you a thicker, almost double layer horizontal line.### (3 number signs) and then press enter = This will give you a thick line with two thin ones surrounding it.*** ( 3 asterisk) and then press enter = This will give you a dotted horizontal line.=== (3 equals signs) Then press enter = This will give you a long equal sign for the horizontal line.~~~ (3 tides) then press enter = This will give you a zig zag horizontal line. See the screenshot below to see the different horizontal lines this shortcut creates.