Making a URL to open in a frame

Hi !

I have a question related to opening a link in a frame . When we click on a link in nestdev,that link opens in a new window in a frame .How can I do that?

I can make a post ‘s title to link an external URL.But how can make it appear in a frame like nestdev.com does?

If a post’s title is linked to someurl.com .That page someurl.com should be opened in a frame .

Thanks !