Eyetracker-Scripts-HowTo.md

@@ -17,6 +17,9 @@ Before you run this script, you will need to configure a few options (e.g. the l
     user@host:~/repo/blocks/egs/prepare_eyetracker_data$ ./run.sh --start_at=5 --stop_after=6
     ```
 
+# TOBII export file requirements
+The TOBII export file should have columns containing AOI hits --- i.e. whether the gaze falls within a particular area of interest at a particular time. The order of the columns doesn't matter, but the column names need to match this format: `AOI hit [Set <Set index> - <Model name> - Model <Model index> - <AOI name>]`. For example, `AOI hit [Set 1 - 6S - Model 7 - Blocks]`.
+
 # Overview and workflow
 
 1. Impute AOI hits in the Tobii export file.