diff --git a/src/commonMain/kotlin/com/insanusmokrassar/krontab/builder/TimeBuilder.kt b/src/commonMain/kotlin/com/insanusmokrassar/krontab/builder/TimeBuilder.kt
index f060f92..f20a809 100644
--- a/src/commonMain/kotlin/com/insanusmokrassar/krontab/builder/TimeBuilder.kt
+++ b/src/commonMain/kotlin/com/insanusmokrassar/krontab/builder/TimeBuilder.kt
@@ -3,27 +3,53 @@ package com.insanusmokrassar.krontab.builder
 import com.insanusmokrassar.krontab.internal.*
 import com.insanusmokrassar.krontab.utils.clamp
 
+/**
+ * This class was created for incapsulation of builder work with specified [restrictionsRange]. For example,
+ * [include] function of [TimeBuilder] will always [clamp] incoming data using its [restrictionsRange]
+ */
 sealed class TimeBuilder (
     private val restrictionsRange: IntRange
 ) {
     private var result: Set<Int>? = null
 
+    /**
+     * After calling of this function this builder will allow any value of current time
+     */
+    @Suppress("unused")
     fun allowAll() {
         result = null
     }
 
+    /**
+     * Will include all variations from this array inside of this timeline
+     */
+    @Suppress("MemberVisibilityCanBePrivate")
     infix fun include(array: Array<Int>) {
         val clamped = array.map { it.clamp(restrictionsRange) } + (result ?: emptySet())
         result = clamped.toSet()
     }
 
+    /**
+     * Add one [value] to current timeline
+     */
+    @Suppress("unused")
     infix fun at(value: Int) {
         result = (result ?: emptySet()) + value.clamp(restrictionsRange)
     }
 
+    /**
+     * Just wrapper for more obvious writing something like "[from] 2 [every] 5". For example, for [SecondsBuilder] it
+     * will mean "[from] second second [every] 5 seconds", or "2, 7, 13, ..."
+     */
     @Suppress("NOTHING_TO_INLINE")
-    inline fun from(value: Int) = value
+    inline infix fun from(value: Int) = value
 
+    /**
+     * Will create an sequence of times starting [from] [this] [every] [delay] times. For example, for [SecondsBuilder] it
+     * will mean "[from] second second [every] 5 seconds", or "2, 7, 13, ..."
+     *
+     * @see [from]
+     */
     infix fun Int.every(delay: Int): Array<Int> {
         val progression = clamp(restrictionsRange) .. restrictionsRange.last step delay
         val result = progression.toSet().toTypedArray()
@@ -32,8 +58,16 @@ sealed class TimeBuilder (
 
         return result
     }
-    infix fun every(delay: Int): Array<Int> = 0 every delay
 
+    /**
+     * Shortcut for "[from] 0 [every] [delay]"
+     */
+    infix fun every(delay: Int): Array<Int> = this from 0 every delay
+
+    /**
+     * Will fill up this timeline from [this] up to [endIncluding]
+     */
+    @Suppress("MemberVisibilityCanBePrivate")
     infix fun Int.upTo(endIncluding: Int): Array<Int> {
         val progression = clamp(restrictionsRange) .. endIncluding.clamp(restrictionsRange)
         val result = progression.toSet().toTypedArray()
@@ -42,13 +76,17 @@ sealed class TimeBuilder (
 
         return result
     }
-    infix fun upTo(endIncluding: Int): Array<Int> = 0 upTo endIncluding
+    /**
+     * Shortcut for "[from] 0 [upTo] [endIncluding]"
+     */
+    @Suppress("unused")
+    infix fun upTo(endIncluding: Int): Array<Int> = this from 0 upTo endIncluding
 
     internal fun build() = result ?.map { it.toByte() } ?.toTypedArray()
 }
 
 class SecondsBuilder : TimeBuilder(secondsRange)
 class MinutesBuilder : TimeBuilder(minutesRange)
-class HoursBuilder : TimeBuilder(com.insanusmokrassar.krontab.internal.hoursRange)
-class DaysOfMonthBuilder : TimeBuilder(com.insanusmokrassar.krontab.internal.dayOfMonthRange)
+class HoursBuilder : TimeBuilder(hoursRange)
+class DaysOfMonthBuilder : TimeBuilder(dayOfMonthRange)
 class MonthsBuilder : TimeBuilder(monthRange)