Thanks again Emdek, here it is the extract I'm talking about
{
"type": "include",
"includeIn": "standard",
"actions":
[
"CloseTab", // this command doesn't appear
"GoBack",
"GoForward",
"Rewind",
"FastForward",
"separator",
"ReloadOrStop",
"ScheduleReload",
"separator",
"BookmarkPage",
"CopyAddress",
"Print",
....
"ContentBlocking",
"WebsitePreferences",
"Preferences",
"separator",
"FullScreen",
"CloseTab" // this wins over first item
]
}