Drag your stylus or finger in just outside the lower left hand corner of the bezel to the screen in the web browser. You are now in Mouse Pointer mode and will remain that way until you lift up your finger/stylus and click on something.

While in mouse pointer mode the lower left hand corner will have a mouse pointer icon, you can click this icon to lock mouse pointer mode on.

In mouse pointer mode you can the press the CTRL key on the keyboard to issue left mouse clicks. You can hold down this key while dragging the mouse pointer to highlight items and text just like in a desktop browser. You can then hit CTRL-C, CTRL-V, CTRL-X to copy, paste, and cut.