On Posix operating systems the default prefix for K-3D is /usr/local/k3d. This location was chosen as a convenience for developers to avoid conflicts with the normal installation directories for packaged software. People creating K-3D packages for specific OS distributions should override the default(s) to install K-3D wherever appropriate for their distribution.
K-3D files will be installed to the following directories relative to the prefix:
bin/ -- Contains the K-3D binaries
include/
k3d/ -- The K-3D SDK header files, for plugin authors and embedders
lib/ -- Core K-3D libraries including the SDK libraries
k3d/ -- K-3D plugin modules that ship with the main program
man/ -- Man pages
share/
k3d/
desktop/ -- Files for integrating K-3D with desktops (links)
dialogtemplates/ -- Dialog template files that define the K-3D UI (deprecated)
doc/
developer_guide/ -- K-3D developer documentation
user_reference/ -- K-3D user documentation (this document)
icons/ -- K-3D icons for desktop use
scripts/ -- Sample K-3D scripts
shaders/ -- RenderMan shaders that ship with K-3D
tutorials/ -- K-3D tutorials that ship with the main program