UIFileArchivePropPage
Description
Load /Saves a file.
The name is set independly of load and save.
It is modified under Filename and clicking the elipses button
Note there are two style of File Selection/Creation Property pages
If the system has been set to native then if supported the native
Operating system file dialog will come up. (Supported on Windows and Ubuntu,
Not supported on MAC)
The other system is the touch screen file dialog
see touch screen file dialog
Parameters
Has Changed
If set the file has changed since the last load.
Note even if read only parameter have changed this will be set.
Is Loaded
Status bit telling whether the file is already loaded into memory
Lean
for some parameter files eg XML file, if set then
ready only paremeter are not saved. Also if set
the parameter attibutes are not saved. This make the file
cleaner to read.