Also one other thing that may be of interest are these scripts which will allow construction lines to persist for more than the end of the current command:

http://kyticka.webzdarma.cz/3d/moi/#KeepCLine

Those scripts allow you to set up some keyboard shortcuts that let you keep construction lines that you have created until some later time when you can use a different key to remove them. If you need to do a lot of custom-spaced "in place" drawing, those may be useful.

But if you want to make a single shape (like the rectangle or polyline that I showed previously) that uses that spacing, the regular construction lines will work for that.

- Michael