diff --git a/README.md b/README.md
index cf48cc0..5dce7a0 100644
--- a/README.md
+++ b/README.md
@@ -111,6 +111,7 @@ tags:
 - human-feedback
 size_categories:
 - 10K<n<100K
+pretty_name: OpenAssistant Conversations
 ---
 
 # OpenAssistant Conversations Dataset (OASST1)
@@ -129,6 +130,8 @@ corpus consisting of 161,443 messages distributed across 66,497 conversation tre
 35 different languages, annotated with 461,292 quality ratings. The corpus is a product
 of a worldwide crowd-sourcing effort involving over 13,500 volunteers.
 
+Please our paper for further details.
+
 ### Dataset Structure
 
 This dataset contains demonstrations of human-assistant conversations which were collected
@@ -144,46 +147,51 @@ conversation threads from prompt to leaf node in a conversation tree are stricly
 between "assistant" and "prompter".
 
 Please refer to [oasst-data](https://github.com/LAION-AI/Open-Assistant/tree/main/oasst-data) for
-details about the data structure and python code to load and write conversation tree and message
-jsonl files.
+details about the data structure and python code to read and write jsonl files containing oasst objects.
 
 
 ## Main Dataset Files
 
-Data is provided either as nested messages in conversation trees or as flat list of messages.
+Data is provided either as nested messages in conversation trees (extension `.trees.jsonl.gz`) 
+or as flat list of messages (extension `.messages.jsonl.gz`).
 
-The type of file can be inferred from the file name extension: 
-- `.trees.jsonl.gz`: Conversation trees with nested messages
-- `.messages.jsonl.gz`: Flat list of messages
-
-Full conversation trees can be reconstructed from a flat messages using the `parent_id` 
-and `message_id` properties to identify the parent-child relationship of messages. To 
-select all messages of a single conversation tree `message_tree_id` can be used (only present 
-in flat messages files).
+Full conversation trees can be reconstructed from flat messages using the `parent_id` 
+and `message_id` properties to identify their parent-child relationship. The `message_tree_id` 
+and `tree_state` properties (only present in flat messages files) can be used to find all
+all messages of a message tree or to select trees by their state.
 
 ### Ready For Export Trees
 
-This set of exported trees contains all trees in `ready_for_export` state without spam
-and deleted messages. For supervised fine-tuning & reward model training this file is ideal.
-
 ```
 2023-04-12_oasst_ready.trees.jsonl.gz       10364 trees with 88838 total messages
 2023-04-12_oasst_ready.messages.jsonl.gz    88838 messages
 ```
+Trees in `ready_for_export` state without spam and deleted messages including message labels.
+The oasst_ready-trees file is normally sufficient for supervised fine-tuning (SFT) & reward model (RM) training.
+
 
 ### All Trees
 
-
 ```
 2023-04-12_oasst_all.trees.jsonl.gz         66497 trees with 161443 total messages
 2023-04-12_oasst_all.messages.jsonl.gz     161443 messages
 ```
+All trees including those in states `prompt_lottery_waiting`, `aborted_low_grade`, `halted_by_moderator`.
+
 
 ### Supplemental Exports: Spam & Prompts
 
 ```
+2023-04-12_oasst_spam.messages.jsonl.gz
+```
+Messages which were deleted or have a negative review result (`"review_result": false`).
+Beside low quality a frequent reason for message deletion is a wrong language tag.
+
 
 ```
+2023-04-12_oasst_prompts.messages.jsonl.gz
+```
+All non-deleted initial prompt messages with positile spam review result of trees in `ready_for_export` or `prompt_lottery_waiting` state.
 
 
 ### Languages
@@ -231,4 +239,4 @@ OpenAssistant Conversations incorporates 35 different languages with a distribut
     <li>Esperanto: 59</li>
     <li>Slovak: 19</li>
   </ul>
-</details>
+</details>
\ No newline at end of file