Hi, Plasma:
On the strings, we may need to write a program to convert the character into path. It may take a little while.
For the structure zooming on 3D view (on ie3d 14.x), what you can do is the following. You view the whole structure. Rotate the structure to the angle you are most conformtable. Point the mouse to where you want to see the detail. Use the Mouse Wheel to zoom in and out. You may need to adjust your mouse pointer at the location to make sure it is centering at the exact location you want to view.
Best regards,