These are the basic file I/O objects for creating variable based, binary data files.
For writing into a file do the following: Insert a file output object into the workspace. Create variables you want to write into the file using the "Add variable" button in the property dialog and specify an output file name. The specified variables appear as input variables of the file output object. Now connect your other objects to the file output object. If the execution reaches the file output object the variables are written into the specified file. If the file already existed, it is overwritten. The creation of multiple output files can easily be done by using the file name generated by a File series object. The created file has the GDEF format.
For reading a VIMMS file, use the file input object. First specify a filename to read within the property dialog. The press the "Update from file" button to read the variable information out of the specified file. The variables to read can also be entered manually, using the "add variable" button. The specified variables appear as output variables of the file input obect. Now connect your other objects to the file intput object. When the execution reaches the file input object the specified files variables are read. If the file doesn't exist, no data appear at the output variables.