A "portable" application is typically created by packaging an installed program into a single executable file that extracts its necessary registry keys and system files to a temporary directory when launched.
: A tool to quickly search and index design content across local and network folders. Autocad 2012 Portable Free Download 103 - Google
AutoCAD relies heavily on the Windows registry, Microsoft Visual C++ redistributables, and various system libraries. Portable versions frequently suffer from crashing, an inability to plot/print, and broken rendering engines. A "portable" application is typically created by packaging