With a CSV file, or an exported PDF/chart file you can Rename, Remove and Share.
Action with 1 file
Touch ⋮ (on the right of the file name)
The bottom sheet dialog appears
Choose the action Rename, Remove or Share you want to work with the file
Action with more than 1 file
Long press on 1 file
Edit screen appears
Check, uncheck or Select all: choose what you want to do
Choose the action Rename, Remove or Share you want to work with files
For exported PDFs/charts, File name and Title sometimes are not the same. If you enter the Title in creating PDF/chart, File name and Title are the same. Otherwise, Title is empty and File name is CSV file’s name.