The "Italic" icon (I) italicizes the selected text.
The "{{int:visualeditor-annotationbutton-subscript-tooltip}" icon (S2) causes the selected text to appear smaller than surrounding text and slightly below the line.
The "Superscript" icon (S2) causes the selected text to appear smaller than surrounding text and slightly above the line.
The "Strikethrough" icon (S) adds a solid bar through the selected text.
The "Computer code" icon (a set of curly brackets: {}) changes the font display in the selected text to a monospaced font, to set it apart from surrounding text.
The "Underline" icon (U) adds a solid line beneath the selected text.
The last icon ("Remove") removes whatever formatting is currently applied to selected text.
Formatting: Clicking the "A" opens a submenu.
The "Bold=" icon (B) bolds the selected text.
The "Italic" icon (I) italicizes the selected text.
The "{{int:visualeditor-annotationbutton-subscript-tooltip}" icon (S2) causes the selected text to appear smaller than surrounding text and slightly below the line.
The "Superscript" icon (S2) causes the selected text to appear smaller than surrounding text and slightly above the line.
The "Strikethrough" icon (S) adds a solid bar through the selected text.
The "Computer code" icon (a set of curly brackets: {}) changes the font display in the selected text to a monospaced font, to set it apart from surrounding text.
The "Underline" icon (U) adds a solid line beneath the selected text.
The last icon ("Remove") removes whatever formatting is currently applied to selected text.