Index: stand/lua/menu.lua
===================================================================
--- stand/lua/menu.lua
+++ stand/lua/menu.lua
@@ -257,6 +257,7 @@
 			menu_entries.zpool_checkpoints,
 			menu_entries.boot_envs,
 			menu_entries.chainload,
+			menu_entries.vendor,
 		}
 	end,
 	all_entries = {
@@ -400,6 +401,10 @@
 			end,
 			alias = {"l", "L"},
 		},
+		vendor = {
+			entry_type = core.MENU_ENTRY,
+			visible = false,
+		},
 	},
 }
 
Index: stand/lua/menu.lua.8
===================================================================
--- stand/lua/menu.lua.8
+++ stand/lua/menu.lua.8
@@ -197,26 +197,51 @@
 	},
 }
 .Ed
-.Pp
-To add another option to the welcome menu:
+.\" Note: the following no longer works because the
+.\" entries for the welcome menu are created by a
+.\" function that's complicated to override w/o
+.\" copying the whole thing and tracking changes.
+.\".Pp
+.\"To add another option to the welcome menu:
+.\".Pp
+.\".Bd -literal -offset indent -compact
+.\"local core = require("core")
+.\"local menu = require("menu")
+.\"
+.\"local welcome_entries = menu.welcome.all_entries
+.\"welcome_entries[#welcome_entries + 1] = {
+.\"	entry_type = core.MENU_CAROUSEL_ENTRY,
+.\"	carousel_id = "unique_boot_entry_name",
+.\"	items = {"NO", "YES"},
+.\"	name = function(_, choice, _)
+.\"		return "Option: " .. choice
+.\"	end,
+.\"	func = function(_, _, _)
+.\"		loader.setenv("some_envvar", "some_value")
+.\"	end,
+.\"}
+.\".Ed
+.\".Pp
+To create a vendor submenu or other vendor menu option,
+override
+.Ic menu.welcome.all_entires.vendor
+like so:
 .Pp
 .Bd -literal -offset indent -compact
 local core = require("core")
 local menu = require("menu")
 
 local welcome_entries = menu.welcome.all_entries
-welcome_entries[#welcome_entries + 1] = {
-	entry_type = core.MENU_CAROUSEL_ENTRY,
-	carousel_id = "unique_boot_entry_name",
-	items = {"NO", "YES"},
-	name = function(_, choice, _)
-		return "Option: " .. choice
-	end,
-	func = function(_, _, _)
-		loader.setenv("some_envvar", "some_value")
-	end,
+welcome_entries.vendor = {
+        entry_type = core.MENU_SUBMENU,
+        name = color.highlight("V") .. "endor Options",
+        submenu = vendor_options,
+        alias = {"v", "V"},
 }
 .Ed
+In the above example,
+.Ic vendor_options
+is a local variable that defines the vendor submenu.
 .Sh SEE ALSO
 .Xr loader.conf 5 ,
 .Xr core.lua 8 ,