# Tab and Comma Separated Files
These are text files that can be assembled in a spreadsheet or a text editor. The files can be either tab delimited (with the extension .txt) or comma delimited (with the extension .csv).
The text files are of the form
Title
abscissa name→ordinate name
abscissa type→ordinate type
x0→y0
x1→y1
…
where → is the delimiter either a “tab” or “comma”.
The axis types are as defined for Curve Files.