Docker for Windows: Showing double prompt and grayed text in power shell: can't exit

Hi,
I have installed docker for windows. I am running a tutorial but its showing grayed text. I can’t come out of the" >> " session. I clicked a right mouse key and then it started scrolling the screen.

I have attached a image.

Please guide me how to come out of the session.

quit
exit
docker run --help

Please guide me how to come out

Zulfi.

Hi,
OS : windows 10 pro
PS C:\Users\zulfi> docker --version
Docker version 18.09.1, build 4c52b90
PS C:> docker run hello-world
Unable to find image ‘hello-world:latest’ locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:2557e3c07ed1e38f26e389462d03ed943586f744621577a99efb77324b0fe535
Status: Downloaded newer image for hello-world:latest

Zulfi.