(This functionality is available with the Transformations module)
The Load Transformation command is available from the Transformations / Co-ordinates menu. It is used to load a previously saved coordinate transformation (.trp) file.
Only one coordinate transformation can be loaded for use at any one time. Loading a different .trp file or using Transformations / Co-ordinates / Define Transformation to load a new transformation unloads the previously loaded transformation.
To create a new .trp file, first use Transformations / Co-ordinates / Define Transformation to load the new transformation. Then use Transfomations / Co-ordinates / Save Transformation to save it as a .trp file.