Good CAD package, it does what you need. Maybe you could implement basic arithmetic (+-*/) in command line, for example coordinate 300+289,400 instead of 289,400 or maybe 300/2,400.
Might be a fantastic program once installed and turned on. SourceForge and the ZCAD developers will gladly show you how to download it. But neither will offer a clue as to how to install it or turn it on once downloaded. There is no clue as to how to install it or turn it on. Not one single clue. Unless you can read Russian, perhaps. Not everyone who might like to use ZCAD has an advanced degree in installing and running programs.
There are no 3 star reviews.