Sheet Studio
No file open
CSV files
No .csv in data/ or files/ yet — those two folders are the only ones this app can see.
Ask your agent to put one there (“save the leads export to data/leads.csv”), or start a session with Clean a spreadsheet from the New Session menu and it will ask you for the file.
Rows
Pick a CSV on the left and it opens here.
Arrow keys move, Space selects, Shift extends the range, Escape clears.
Column
Open a file to see a column summary.
Duplicates
Matching ignores case and surrounding spaces. The first row of each group is kept.