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user to see the Displacments, Forces etc by Clicking on the model and moving thro the model using arrow keys on the screen.
You can do this now. Click on the "Grid Review" toolbar button. As you click on items in the grid, the corresponding pipe is highlighted. Conversely, if you click on a pipe, the corresponding dataline in the grid is highlighted.

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An option to modify the model through the Spreadsheet or Graphical interface( on screen editing) will be a good value.
You could always modify the model from the spreadsheet or LIST, and see the graphics update (assuming you had enough screen real estate to have both open). With Version 5.00 there will be "some" editing capabilities in the input graphics.

With regards to CNODEs, you're right, this isn't a common Stress Engineer's term. A CNODE is simply a restraint construct that associates degrees of freedom. We needed a term for this, hence the use of CNODE, or "connecting node". The alternative would be either:

a) require the user to define polynomial constraint equations, or
b) require the user to define zero length dummy (expansion joint) elements to define the stiffness connectivity.

Both ideas are very error prone in actual usage.

<font color="#ff0000">Just for the record, there will not be a "Version 4.60". The version that follows 4.50 will be "Version 5.00".</font>
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Regards,
Richard Ay - Consultant