The third line (TAG3) defines a flyout control. It uses the key word Flyout followed by a series of options contained in parentheses.
flyname
The string that names the flyout. The string must comprise alphanumeric characters with no punctuation other than a dash (-) or an underscore (_). This string is displayed as a tooltip when the cursor is placed over the flyout.
id_small
The string that names the ID string of the small-image resource (16 by 15 bitmap). The string must comprise alphanumeric characters with no punctuation other than a dash (-) or an underscore (_). This can also specify a user-defined bitmap.
id_big
The string that names the ID string of the large-image resource (24 by 22 bitmap). The string must comprise alphanumeric characters with no punctuation other than a dash (-) or an underscore (_). This can also specify a user-defined bitmap.
icon
The Boolean keyword that controls whether to always display its own icon or to display the last icon selected (other). The acceptable values are OwnIcon and OtherIcon and are not case sensitive.
alias
The reference to the toolbar to display as the flyout. The alias refers to a toolbar submenu defined with the standard **aliasname syntax.