View source for Menu differences in Windows, Linux, and Mac

==Firefox and Thunderbird==
'''Note:''' Starting in Firefox 4, the Menu bar is hidden by default on Windows Vista and above.  To access Options (and other menu items),  either click the [≡] button in the right corner of the main toolbar (for Firefox versions previous to 29.0, click the [[#Application button|Firefox button]] in the upper-left corner of the title bar) or press the "Alt" key to temporarily show a hidden Menu bar (check View &rarr; Toolbars &rarr; Menu&nbsp;Bar to keep the Menu bar visible at all times).

{| {{prettytable}}
! Menu item || Windows || Linux || Mac OS X
|-
! Options / Preferences   
| Tools &rarr; Options... || Edit &rarr; Preferences ||  Firefox &rarr; Preferences... <br>Thunderbird &rarr; Preferences... 
|-
|-
! Account&nbsp;Settings (Thunderbird)
| Tools &rarr; Account&nbsp;Settings... || Edit &rarr; Account&nbsp;Settings || Tools &rarr; Account&nbsp;Settings...
|- 
|}

===Application button===
Recent versions have a summarizing menu to access frequently used items. This is either an application button located in the upper-left corner of the title bar or, starting in Firefox 29.0 and Thunderbird 17.0,  a [≡] button in the right corner of the main toolbar.

{| {{prettytable}}
! Menu item || Windows || Linux || Mac OS X
|-
! Options / Preferences   
| Options &rarr; Options... || Preferences &rarr; Preferences ||  Preferences &rarr; Preferences... 
|-
|-
! Account&nbsp;Settings (Thunderbird)
| Options &rarr; Account&nbsp;Settings... || Preferences &rarr; Account&nbsp;Settings || Preferences &rarr; Account&nbsp;Settings...
|- 
|}