One can choose at boot time between a big number of languages.

The point is, it would be running at boot time.

One of up to sixteen different images can be selected at boot time.

Not sure that the fast boot times and responsiveness would have much to do with good "design".

Well, let's say you can shave 10 seconds off of the boot time.

A single program is loaded at boot time, called the interpreter.

The company states that the major advantage of its boards is very short boot time (less than one second).

Get it on the hardware once at boot time, and it's good to go.

There's going to be some overhead in terms of boot time.

This makes for long boot times, but fast speeds during use.