There is a text box on the Advanced Options page of the Import Wizard that is used to specify LabTalk code to be executed after data import is complete. This feature allows you to perform automatic post-processing of the imported data -- calculations, formatting, analysis, plotting, etc. The LabTalk script can include X-Functions or Origin C functions, provided that Origin C functions have been compiled.
The Advanced Options page is added to the Import Wizard, when the Save Filter checkbox and the Specify advanced filter options (Save Filters page) boxes are both selected. Note that the script is saved in the import filter.