Using viewports for PIDs/PFDs

[PID81]

Hi just started a new company and I'm a little baffled as to why the drafters would draw the PFD/PID in model space then create a viewport to view it?

1. For new PIDs they create a rectangle (defpoints) in model space but every time this is a different size so the drawings don't look neat and it's difficult to match up continuation markers etc Again same problem with the Viewports as eveyone is snapping it to differnt areas of the drawing border.

What would be the best way to deal with this... Draw the PID in paperspace where the borders attached and draw within the limits or should i be drawing in model space and bringing in a viewport each time. If this is the case i really need your help or ideas please

Thanks

[ReMark]

We draw our P&IDs in model space. We place our titleblock and border plus any notes in paper space. Why? Because we have layouts for each size of paper the engineers like to print to depending on their needs. So we have the following layouts: 24x36, 18x24, 11x17 and 8.5x11.