This applies to all the actions below. To apply a style then it is necessary to select the word or phrase you wish to style, as shown below.
Bold text
click on the big B
keyboard shortcut: ctrl + b
Italicize text
click on the big I
keyboard shortcut: ctrl + i
Underline a text
click on the big U
keyboard shortcut: ctrl + u
Add a title (larger text)
H1 = title 1
H2 = title 2
H3 = title 3
Add a smart list
click on the smart list icon
or just hit the dash on the 6.
Add a numbered list
click on the numbered list icon
or type "1."
Change the text color
Click on the pipette with the white background
Choose the colour that suits you and then click next to it.
Highlight a text
Click on the pipette with the colored background
Choose the colour that suits you and then click next to it.
Cancel my changes
Click on the wheel that goes to the left
Reinstate my changes
Click on the wheel that goes to the left
Customize text via HTML code
Click on the icon that looks like this " >_ "
Overwrite the style of a text (especially for copy/paste)
Click on the icon that looks like this "Tx". Especially handy in case of copy/paste.