That technique was not uncommon in the days of acetate and tape. I remember seeing quite a few boards similar to what is shown. I would think it is possible in DipTrace using either copper pours or shapes. If shapes are used they will be direct connections only and will not honor thermal spoke setti...

Schematic symbols should ideally reflect the function of the represented device. This article is a decent starting point: https://www.edn.com/electronics-blogs/anablog/4457641/Make-schematic-symbols-understandable There are probably other, and better, tutorials on the subject. In addition to using m...

More control over dimension placement would be helpful.
If you're not aware of this, hovering over the dimension line changes its color to red. Left click while hovering will allow the dimension line to be moved either up-down or left-right.

You're not doing anything wrong. Route keepout shapes are used during trace routing to keep pours and traces away from areas the layout designer designates. They are not part of the manufacturing output.

On my DipTrace installation:
Hovering over any pad, whether connected to a plane or trace, or unrouted, will show all the other pads on that same net as red.
Hovering over a trace will show connected traces and pads in cyan.
Hovering over a pour does not highlight any pads.

Surely you can just create a schematic with components and wires etc. Then do a convert to PCB to get the ratlines and components into the PCB Layout.. Yes. I do this all the time for simple boards. You do not need to use the net classes feature at all. The trace width for each net can be individua...

When I export from the 3D viewer, it does not respect the project units--it always exports in millimeters. Unfortunately, that causes problems with my mechanical CAD program

The actual size of the imported model should be independent of the units used. Which mechanical CAD software are you using?

grabcad.com has some 3D models of various 7-segment displays.
https://grabcad.com/library?page=1&time ... =7-segment

1. Select all of the components/symbols you want to change (rename). 2. While hovering over one of the selected symbols, right click and select "Replace Part..." from the context menu. 3. Select the new part (port) in the pop-up window. 4. At the bottom of that window select "Selected Components" in...

The following instructions apply to Diptrace 3.3.1.1 so I'm not sure if the menu structure and window organization is the same in 2.4.0.2. Open the Component Editor on the "old" computer and select "Library->Library Setup" from the main menu. Click through the groups under the "Groups" heading and t...