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+File
+======
+
+ArGaze provides a ready-made contexts to read data from various file format.
+
+To select a desired context, the JSON samples have to be edited and saved inside an [ArContext configuration](../configuration_and_execution.md) file.
+Notice that the *pipeline* entry is mandatory.
+
+```json
+{
+	JSON sample
+	"pipeline": ...
+}
+```
+
+Read more about [ArContext base class in code reference](../../../argaze.md/#argaze.ArFeatures.ArContext).
+
+## CSV
+
+::: argaze.utils.contexts.File.CSV
+
+### JSON sample: splitted case
+
+To use when gaze position coordinates are splitted in two separated columns.
+
+```json
+{
+    "argaze.utils.contexts.File.CSV": {
+        "name": "CSV file data playback",
+        "path": "./src/argaze/utils/demo/gaze_positions_splitted.csv",
+        "timestamp_column": "Timestamp (ms)",
+        "x_column": "Gaze Position X (px)",
+        "y_column": "Gaze Position Y (px)",
+        "pipeline": ...
+    }
+}
+```
+
+### JSON sample: joined case
+
+To use when gaze position coordinates are joined as a list in one single column.
+
+```json
+{
+    "argaze.utils.contexts.File.CSV" : {
+        "name": "CSV file data playback",
+        "path": "./src/argaze/utils/demo/gaze_positions_xy_joined.csv",
+        "timestamp_column": "Timestamp (ms)",
+        "xy_column": "Gaze Position (px)",
+        "pipeline": ...
+    }
+}
+```
+
+### JSON sample: left and right eyes
+
+To use when gaze position coordinates and validity are given for each eye in six separated columns.
+
+```json
+{
+    "argaze.utils.contexts.File.CSV": {
+        "name": "CSV file data playback",
+        "path": "./src/argaze/utils/demo/gaze_positions_left_right_eyes.csv",
+        "timestamp_column": "Timestamp (ms)",
+        "left_eye_x_column": "Left eye X",
+        "left_eye_y_column": "Left eye Y",
+        "left_eye_validity_column": "Left eye validity",
+        "right_eye_x_column": "Right eye X",
+        "right_eye_y_column": "Right eye Y",
+        "right_eye_validity_column": "Right eye validity",
+        "rescale_to_pipeline_size": true,
+        "pipeline": ...
+    }
+}
+```