Chrs_old_vids_31-44.zip

Do not include the .zip suffix in the text box.

The "proper text" for the puzzle in the Code.org CS Principles Lossless Compression lesson is: CHRS_old_vids_31-44 CHRS_old_vids_31-44.zip

Use underscores ( _ ) instead of spaces or dashes. Do not include the