The TOPAS #include and #ingest commands let you bring extra information into an INP file. #ingest will be available from TA v8 onwards.

Putting command “#include filename.inc” will include any topas instructions in filename.inc when you run a refinement. It's useful for storing information that needs to be read, but is not part of a refinement. One example would be putting a #list of information about a set of datafiles to be analysed in a separate file. Information like fixed instrumental parameters could also be read using #include.

#ingest is similar, but reads information from an external file into the INP file. Any refined values then get included in the OUT file, and can be analysed or used in subsequent refinements.