diff --git a/API.md b/API.md
index 58d2f90..22ad8e1 100644
--- a/API.md
+++ b/API.md
@@ -108,17 +108,18 @@ Creates and initializes the player.
| --- | --- | --- |
| key | string | NexPlayer key to validates the playback. |
| div | HTMLDivElement | the div container of the player. |
-| src | string | relevant src of the video to be played. |
+| src | string | of the video to be played. |
| autoplay | boolean | determines if the video must start playing or paused. By default it's set to true. |
| drm | Array. | contains an array of DRM information. By default it's set to null. |
-| seekUI | number | sets the number of seconds the UI buttons will seek forwards or backwards. By default is set to 10s. |
-| mutedAtStart | boolean | determine if the video will start playing muted or not. By default this value is set to false. |
-| debug | boolean | determine if log information is showed. By default is set to true. |
-| type_360 | string | select the 360 video format to play. Possible values are 'equirectangular', 'cubemap' and 'topdown'. |
-| autohide | boolean | sets if the UI must hide when the user does not interact with the video. By default is set to true.. |
+| seekUI | number | establish the number of seconds the UI buttons will seek forwards or backwards. By default is set to 10s. |
+| mutedAtStart | boolean | determines if the video will start playing muted or not. By default this value is set to false. |
+| debug | boolean | determines if log information is showed. By default is set to true. |
+| type_360 | string | selects the 360 video format to play. Possible values are 'equirectangular', 'cubemap' and 'topdown'. |
+| autohide | boolean | establishes if the UI must hide when the user does not interact with the video. By default is set to true.. |
| callbacksForPlayer | function | used for retrieving the nexplayer instance and video element. This is necessary for getting the instance and use the NexPlayer API. |
-| callbackForReturn | function | sets a callback to be executed when the corresponding button is clicked. |
-| callbackForLogger | function | function to be called when the logger shows a message. |
+| callbackForReturn | function | establishes a callback to be executed when the corresponding button is clicked. |
+| callbackForLogger | function | function to be called when the logger show a message. |
+
| vast | string | advertisement url that is going to be played. VAST, VPAID, VMAP are supported. |
| useDynamicThumbnails | boolean | determines if dynamic thumbnails are used. By default this values is set to false. |
| showingFullUI | boolean | determines if the UI is hidden or not. |