diff --git a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/chat/members/SetChatAdministratorCustomTitle.kt b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/chat/members/SetChatAdministratorCustomTitle.kt
index f91dcfc41b..c914522a27 100644
--- a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/chat/members/SetChatAdministratorCustomTitle.kt
+++ b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/chat/members/SetChatAdministratorCustomTitle.kt
@@ -5,11 +5,6 @@ import com.github.insanusmokrassar.TelegramBotAPI.types.*
 import kotlinx.serialization.*
 import kotlinx.serialization.builtins.serializer
 
-/**
- * Representation of https://core.telegram.org/bots/api#setchatadministratorcustomtitle
- *
- * Please, remember about restrictions for characters in custom title
- */
 @Serializable
 data class SetChatAdministratorCustomTitle(
     @SerialName(chatIdField)
diff --git a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/send/media/base/MultipartRequestImpl.kt b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/send/media/base/MultipartRequestImpl.kt
index 7090488dde..c4464466f6 100644
--- a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/send/media/base/MultipartRequestImpl.kt
+++ b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/send/media/base/MultipartRequestImpl.kt
@@ -4,9 +4,6 @@ import com.github.insanusmokrassar.TelegramBotAPI.requests.abstracts.*
 import kotlinx.serialization.DeserializationStrategy
 import kotlinx.serialization.json.JsonObject
 
-/**
- * Will be used as SimpleRequest if
- */
 class MultipartRequestImpl<D: DataRequest<R>, F: Files, R: Any>(
     val data: D,
     val files: F
diff --git a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/actions/BotAction.kt b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/actions/BotAction.kt
index f8bd33f045..cce421d77b 100644
--- a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/actions/BotAction.kt
+++ b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/actions/BotAction.kt
@@ -2,6 +2,9 @@ package com.github.insanusmokrassar.TelegramBotAPI.types.actions
 
 import kotlinx.serialization.*
 
+/**
+ * Use BotAction objects realisations to notify user about bot actions
+ */
 @Serializable(BotActionSerializer::class)
 sealed class BotAction {
     abstract val actionName: String
@@ -31,54 +34,80 @@ internal object BotActionSerializer: KSerializer<BotAction> {
 }
 
 /**
- * Use BotAction objects realisations to notify user about bot actions
+ * Will notify user that bot is "typing" something
  */
-
 @Serializable(BotActionSerializer::class)
 object TypingAction : BotAction() {
     override val actionName: String = "typing"
 }
 
+/**
+ * Will notify user that bot is uploading some photo
+ */
 @Serializable(BotActionSerializer::class)
 object UploadPhotoAction : BotAction() {
     override val actionName: String = "upload_photo"
 }
 
+/**
+ * Will notify user that bot is recording some video
+ */
 @Serializable(BotActionSerializer::class)
 object RecordVideoAction : BotAction() {
     override val actionName: String = "record_video"
 }
 
+/**
+ * Will notify user that bot is uploading some photo
+ */
 @Serializable(BotActionSerializer::class)
 object UploadVideoAction : BotAction() {
     override val actionName: String = "upload_video"
 }
 
+/**
+ * Will notify user that bot is recording some audio
+ */
 @Serializable(BotActionSerializer::class)
 object RecordAudioAction : BotAction() {
     override val actionName: String = "record_audio"
 }
 
+/**
+ * Will notify user that bot is uploading some audio
+ */
 @Serializable(BotActionSerializer::class)
 object UploadAudioAction : BotAction() {
     override val actionName: String = "upload_audio"
 }
 
+/**
+ * Will notify user that bot is uploading some document
+ */
 @Serializable(BotActionSerializer::class)
 object UploadDocumentAction : BotAction() {
     override val actionName: String = "upload_document"
 }
 
+/**
+ * Will notify user that bot is trying to find location
+ */
 @Serializable(BotActionSerializer::class)
 object FindLocationAction : BotAction() {
     override val actionName: String = "find_location"
 }
 
+/**
+ * Will notify user that bot is recording video note
+ */
 @Serializable(BotActionSerializer::class)
 object RecordVideoNoteAction : BotAction() {
     override val actionName: String = "record_video_note"
 }
 
+/**
+ * Will notify user that bot is uploading video note
+ */
 @Serializable(BotActionSerializer::class)
 object UploadVideoNoteAction : BotAction() {
     override val actionName: String = "upload_video_note"
diff --git a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/files/abstracts/TelegramMediaFile.kt b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/files/abstracts/TelegramMediaFile.kt
index 67a34b9457..5a3ae1e393 100644
--- a/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/files/abstracts/TelegramMediaFile.kt
+++ b/TelegramBotAPI/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/files/abstracts/TelegramMediaFile.kt
@@ -8,7 +8,7 @@ internal const val fileSizeField = "file_size"
 internal const val filePathField = "file_path"
 
 /**
- * Declare common part of media files in Telegram. Note: it is not representation of `File` type
+ * Declare common part of media files in Telegram. Note: it is not representation of JVM `File` type
  */
 interface TelegramMediaFile {
     val fileId: FileId