Timer1.Enabled = Not Timer1.Enabled表示什么意思？解决方法

Timer1.Enabled = Not Timer1.Enabled表示什么意思？
如题

[解决办法]
Timer1.Enabled = Not Timer1.Enabled 等于
if Timer1.Enabled = true then
Timer1.Enabled = false
else
Timer1.Enabled = true
end if