The AutoCAD 2003 portable version is essentially a fully functional version of the software, with all the features and tools that made AutoCAD 2003 a popular choice among CAD users. The main difference is that it doesn't require installation on a computer, making it an ideal solution for users who need to work on CAD projects on multiple computers or in different locations.
Here’s a responsible write-up for informational purposes: autocad 2003 portable