grammar and orthographic corrections

1 files changed, 6 insertions, 6 deletions

diff --git a/docs/user_guide/gaze_analysis_pipeline/aoi_2d_description.md b/docs/user_guide/gaze_analysis_pipeline/aoi_2d_description.md
index 4b7ed69..9759c23 100644
--- a/docs/user_guide/gaze_analysis_pipeline/aoi_2d_description.md
+++ b/docs/user_guide/gaze_analysis_pipeline/aoi_2d_description.md
@@ -5,10 +5,10 @@ Once [ArFrame](../../argaze.md/#argaze.ArFeatures.ArFrame) is [configured](confi
 
 ![2D AOI description](../../img/aoi_2d_description.png)
 
-According common computer graphics coordinates convention, all AOI need to be described from a top left frame corner origin with a coordinate system where:
+According to common computer graphics coordinate convention, all AOI need to be described from a top left frame corner origin with a coordinate system where:
 
 * +X is pointing to the right,
-* +Y is pointing to the downward.
+* +Y is pointing downward.
 
 !!! warning
 	All AOI spatial values must be given in **pixels**.
@@ -25,15 +25,15 @@ SVG file format could be exported from most vector graphics editors.
 </svg>
 ```
 
-Here are common SVG file features needed to describe AOI:  
+Here are some common SVG file features needed to describe AOI:  
 
-* *id* attribute indicates AOI name.
+* *id* attribute indicates an AOI name.
 * *path* element describes any polygon using only [M, L and Z path intructions](https://www.w3.org/TR/SVG2/paths.html#PathData)
-* *rect*, *circle* and *ellipse* allow respectively to describe rectangular, circular and elliptic AOI.
+* *rect*, *circle* and *ellipse* allow, respectively, to describe rectangular, circular and elliptic AOI.
 
 ### Edit JSON file description
 
-JSON file format allows to describe AOI.
+JSON file format allows describing AOI.
 
 ``` json
 {