"Fill in this field to have a custom file name when downloading this report. This string is evaluated as a jinja2 expression.\n"
"You can use python expressions, `objects` is a browse record list of the objects for which the report is being generated.\n"
"Check for this list's length to determine if it is a report being printed for multiple records or not. You also have access to `o`, which is the first record in the list"