# 2.5.5 Parameter Files

Parameter Files contain turnout, sectional track and structure definitions. Parameter Files are loaded and unloaded with the Parameter Files dialog.

The dialog contains a list of parameter files. Each file is preceded by a checked box. If the box is checked, the parameter file is loaded. If the box is not checked the file is unloaded.

Loaded definition files associated with current scale settings appear on the Hot Bar (Section 2.7). If you unload a file the definitions are removed from the selection lists and the Hot Bar. An unloaded file may be reloaded by selecting the Reload button (The Unload button changes to Reload when a selected file is unloaded).

Unloaded files are removed from the list when XTrackCAD terminates.

Files can be listed by either their file name or by their contents description. This is controlled by the Show File Names check box.

The Browse button allows you to load other parameter files such as provided by other users or downloaded from the Internet.

When first installed, all available parameter files are loaded. You can unload parameter files you don't use to speed up XTrackCAD startup time.

The order in this list controls the order of turnouts and structures on the Hot Bar (Section 2.7). You can move a parameter file to the end of the list by Unloading it, and then loading it via the Browse button.