Not explicitly, but there are workarounds. Example.
;Declaring Variables
Global $a = 1, $b = 2, $c = $a + $b
ConsoleWrite($c & @CRLF)
;Using Operators with Functions, must be saved to a variable. (For demonstration purposes only.)
$Test = MsgBox(0, "Test 1", "This is a test.") + MsgBox(0, "Test 2", "This is a test.") - MsgBox(0, "Test 3", "This is a test.")
;Using a Function with Operators. (For demonstration purposes only.)
_MultilineExec(MsgBox(0, "Test 4", "This is a test.") + MsgBox(0, "Test 5", "This is a test.") - MsgBox(0, "Test 6", "This is a test."))
Func _MultilineExec($sParameter)
Return $sParameter
EndFunc
Adam