diff --git a/src/libslic3r/TextConfiguration.hpp b/src/libslic3r/TextConfiguration.hpp
index b333b7cf77..ae8a6c0cb2 100644
--- a/src/libslic3r/TextConfiguration.hpp
+++ b/src/libslic3r/TextConfiguration.hpp
@@ -7,55 +7,87 @@
 
 namespace Slic3r {
 
-// user defined font property
+/// <summary>
+/// User modifiable property of text style
+/// </summary>
 struct FontProp
 {
     // define extra space between letters, negative mean closer letter
-    std::optional<int> char_gap;
+    // When not set value is zero and is not stored
+    std::optional<int> char_gap; // [in font point]
+
     // define extra space between lines, negative mean closer lines
-    std::optional<int> line_gap;
-    // Z depth of text [in mm]
-    float emboss;
+    // When not set value is zero and is not stored
+    std::optional<int> line_gap; // [in font point]
+
+    // Z depth of text 
+    float emboss; // [in mm]
 
     // positive value mean wider character shape
     // negative value mean tiner character shape
+    // When not set value is zero and is not stored
     std::optional<float> boldness; // [in mm]
 
     // positive value mean italic of character (CW)
     // negative value mean CCW skew (unItalic)
-    std::optional<float> skew;
+    // When not set value is zero and is not stored
+    std::optional<float> skew; // [ration x:y]
 
     // distance from surface point
     // used for move over model surface
-    std::optional<float> distance;
+    // When not set value is zero and is not stored
+    std::optional<float> distance; // [in mm]
 
-    // change up vector of font
-    std::optional<float> angle;
+    // change up vector direction of font
+    // When not set value is zero and is not stored
+    std::optional<float> angle; // [in radians]
 
-    // TODO: add enum class Align: center/left/right
+    //enum class Align {
+    //    left,
+    //    right,
+    //    center,
+    //    top_left,
+    //    top_right,
+    //    top_center,
+    //    bottom_left,
+    //    bottom_right,
+    //    bottom_center
+    //};
+    //// change pivot of text
+    //// When not set, center is used and is not stored
+    //std::optional<Align> align;
 
     //////
     // Duplicit data to wxFontDescriptor
     // used for store/load .3mf file
     //////
 
-    // Height of letter [in mm],
+    // Height of text line (letters)
     // duplicit to wxFont::PointSize
-    float size_in_mm;
-    // Define type of font
+    float size_in_mm; // [in mm]
+
+    // Additional data about font to be able to find substitution,
+    // when same font is not installed
     std::optional<std::string> family;
     std::optional<std::string> face_name;
     std::optional<std::string> style;
     std::optional<std::string> weight;
 
+    /// <summary>
+    /// Only constructor with restricted values
+    /// </summary>
+    /// <param name="line_height">Y size of text [in mm]</param>
+    /// <param name="depth">Z size of text [in mm]</param>
     FontProp(float line_height = 10.f, float depth = 2.f)
         : emboss(depth), size_in_mm(line_height)
     {}
 
     bool operator==(const FontProp& other) const {
+        // compare float values
         auto is_equal = [](const float &v1, const float &v2) { 
             return fabs(v1 - v2) < std::numeric_limits<float>::epsilon();
         };
+        // compare optional float values
         auto is_equal_ = [&is_equal](const std::optional<float> &v1,
                             const std::optional<float> &v2) {
             return (!v1.has_value() && !v2.has_value()) ||
@@ -71,22 +103,31 @@ struct FontProp
     }
 
     // undo / redo stack recovery
-    template<class Archive> void serialize(Archive &ar)
-    {
-        ar(char_gap, line_gap, emboss, boldness, skew, size_in_mm, family, face_name, style, weight);
-    }
+    //template<class Archive> void serialize(Archive &ar)
+    //{
+    //    ar(char_gap, line_gap, emboss, boldness, skew, size_in_mm, family, face_name, style, weight);
+    //}
 };
 
-// represent selected font
-// Name must be human readable is visible in gui
-// (Path + Type) must define how to open font for using on different OS
-// NOTE: OnEdit fix serializations: FontListSerializable, TextConfigurationSerialization
+/// <summary>
+/// Style of embossed text
+/// (Path + Type) must define how to open font for using on different OS
+/// NOTE: OnEdit fix serializations: FontListSerializable, TextConfigurationSerialization
+/// </summary>
 struct FontItem
 {
+    // Human readable name of style it is shown in GUI
     std::string name;
+
+    // Define how to open font
+    // Meaning depend on type
     std::string path;
+
     enum class Type;
+    // Define what is stored in path
     Type type;
+
+    // User modification of font style
     FontProp prop;
 
     FontItem() : type(Type::undefined){} // set undefined type
@@ -97,17 +138,23 @@ struct FontItem
              const std::string &path,
              Type               type,
              const FontProp &   prop)
-        : name(name), path(path), type(type), prop(prop)
+        : name(name), path(path), type(type), prop(prop) // copy values
     {}
 
     // define data stored in path
+    // when wx change way of storing add new descriptor Type
     enum class Type { 
         undefined = 0,
-        file_path, // TrueTypeFont file loacation on computer - for privacy: path is NOT stored into 3mf
+
         // wx font descriptors are platform dependent
-        wx_win_font_descr, // path is font descriptor generated by wxWidgets on windows
-        wx_lin_font_descr, // path is font descriptor generated by wxWidgets on windows
-        wx_mac_font_descr // path is font descriptor generated by wxWidgets on windows
+        // path is font descriptor generated by wxWidgets
+        wx_win_font_descr, // on Windows 
+        wx_lin_font_descr, // on Linux
+        wx_mac_font_descr, // on Max OS
+
+        // TrueTypeFont file loacation on computer
+        // for privacy: only filename is stored into .3mf
+        file_path
     };
 
     bool operator==(const FontItem &other) const {
@@ -119,11 +166,11 @@ struct FontItem
             ;
     }
 
-    // undo / redo stack recovery
-    template<class Archive> void serialize(Archive &ar)
-    {
-        ar(name, path, (int) type, prop);
-    }
+    //// undo / redo stack recovery
+    //template<class Archive> void serialize(Archive &ar)
+    //{
+    //    ar(name, path, (int) type, prop);
+    //}
 };
 
 // Font item name inside list is unique
@@ -131,14 +178,17 @@ struct FontItem
 // It is stored into AppConfig by FontListSerializable
 using FontList = std::vector<FontItem>;
 
-// define how to create 'Text volume'
-// It is stored into .3mf by TextConfigurationSerialization
-// Also it is stored into undo / redo stack by cereal
+/// <summary>
+/// Define how to create 'Text volume'
+/// It is stored into .3mf by TextConfigurationSerialization
+/// It is part of ModelVolume optional data
+/// </summary>
 struct TextConfiguration
 {
-    // define font
+    // Style of embossed text
     FontItem font_item;
 
+    // Embossed text value
     std::string text = "None";
 
     TextConfiguration() = default; // optional needs empty constructor
@@ -147,7 +197,7 @@ struct TextConfiguration
     {}
 
     // undo / redo stack recovery
-    template<class Archive> void serialize(Archive &ar){ ar(text, font_item); }
+    //template<class Archive> void serialize(Archive &ar){ ar(text, font_item); }
 };    
 
 } // namespace Slic3r
diff --git a/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp b/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
index 27f9771796..513f7cfdf3 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
@@ -179,19 +179,45 @@ static void draw_place_to_add_text() {
 
 bool GLGizmoEmboss::on_mouse_for_rotation(const wxMouseEvent &mouse_event)
 {
+    if (mouse_event.Moving()) return false;
+    if (!m_dragging) return false;
+
+    assert(m_volume != nullptr);
+    assert(m_volume->text_configuration.has_value());
+
+    static std::optional<float> start_angle;
     if (mouse_event.Dragging()) {
-        if (m_dragging) {
-            // temporary rotation
-            TransformationType transformation_type(
-                TransformationType::Local_Relative_Independent);
-            Vec3d rotation(0., 0., m_rotate_gizmo.get_angle());
-            m_parent.get_selection().rotate(rotation, transformation_type);
+        auto &angle_opt = m_volume->text_configuration->font_item.prop.angle;
+        if (!start_angle.has_value()) {
+            start_angle = angle_opt.has_value() ? *angle_opt : 0.f;    
         }
+        // temporary rotation
+        TransformationType transformation_type(
+            TransformationType::Local_Relative_Independent);
+        double angle = m_rotate_gizmo.get_angle();
+        m_parent.get_selection().rotate(Vec3d(0., 0., angle), transformation_type);
+
+        // propagate angle into property
+        angle_opt = static_cast<float>(*start_angle + angle);
+        // move to range <-M_PI, M_PI>
+        if (*angle_opt > M_PI) {
+            *angle_opt -= 2 * M_PI;
+        } else if (*angle_opt < -M_PI) {
+            *angle_opt += 2 * M_PI;
+        }
+        // do not store zero
+        if (std::fabs(*angle_opt) < std::numeric_limits<float>::epsilon())
+            angle_opt.reset();
+        
+        // set into activ style
+        if (m_font_manager.is_activ_font()) {
+            m_font_manager.get_font_prop().angle = angle_opt;
+        }
+
     } else if (mouse_event.LeftUp()) {
-        if (m_dragging) {
-            // apply rotation
-            m_parent.do_rotate(L("Text-Rotate"));
-        }
+        // apply rotation
+        m_parent.do_rotate(L("Text-Rotate"));
+        start_angle.reset();
     }
     return false;
 }
@@ -252,7 +278,7 @@ bool GLGizmoEmboss::on_mouse_for_translate(const wxMouseEvent &mouse_event)
 
         const FontProp& font_prop = m_volume->text_configuration->font_item.prop;
         if (font_prop.angle.has_value()) {
-            double angle_z = M_PI / 180.0 * (*font_prop.angle);
+            double angle_z = *font_prop.angle;
             trmat *= Eigen::AngleAxisd(angle_z, Vec3d::UnitZ());
         }
         if (font_prop.distance.has_value()) {
@@ -1308,19 +1334,19 @@ void GLGizmoEmboss::draw_advanced()
     if (m_imgui->slider_optional_float(_u8L("Italic [Skew ratio]").c_str(), font_prop.skew, -1.f, 1.f, "%.2f", 1.f, false, _L("Italic strength ratio")))
         exist_change = true;
     
-    // Property of text configuration
-    FontProp &tc_prop = m_volume->text_configuration->font_item.prop;
-
     float prev_distance = font_prop.distance.has_value() ?
                          *font_prop.distance : .0f;
     float min_distance = -2 * font_prop.emboss,
           max_distance = 2 * font_prop.emboss;
     ImGui::SetNextItemWidth(item_width);
     if (m_imgui->slider_optional_float(_u8L("Surface distance").c_str(), font_prop.distance,
-        min_distance, max_distance, "%.2f mm", 1.f, false, _L("Distance from model surface"))) {
+        min_distance, max_distance, "%.2f mm", 1.f, false, _L("Distance from model surface")) &&
+        m_volume != nullptr && m_volume->text_configuration.has_value()) {
+
+        FontProp& tc_prop = m_volume->text_configuration->font_item.prop;
         tc_prop.distance = font_prop.distance;
-        float act_distance = font_prop.distance.has_value() ?
-                            *font_prop.distance : .0f;
+        
+        float act_distance = font_prop.distance.has_value() ? *font_prop.distance : .0f;
         float diff = act_distance - prev_distance;
         Vec3d displacement_rot = Vec3d::UnitZ() * diff;
 
@@ -1335,23 +1361,35 @@ void GLGizmoEmboss::draw_advanced()
         m_parent.do_move(snapshot_name);
     }
 
-    float prev_angle = font_prop.angle.has_value() ? *font_prop.angle : .0f;
+    std::optional<float> &angle = font_prop.angle;
+    float prev_angle = angle.has_value() ? *angle : .0f;
+    float angle_deg  = prev_angle * 180 / M_PI;
     ImGui::SetNextItemWidth(item_width);
-    if (m_imgui->slider_optional_float(_u8L("Angle").c_str(), font_prop.angle,
-        -180.f, 180.f, u8"%.2f °", 1.f, false, _L("Rotation of text"))) {
-        tc_prop.angle = font_prop.angle;
-        float act_angle = font_prop.angle.has_value() ? *font_prop.angle : .0f;
-        float diff = act_angle-prev_angle;
+    if (m_imgui->slider_float(_u8L("Angle").c_str(), &angle_deg,
+        -180.f, 180.f, u8"%.2f °", 1.f, false, _L("Rotation of text")) ){
+        if (std::fabs(angle_deg) < std::numeric_limits<float>::epsilon()) {
+            angle.reset();
+        } else {
+            // convert to radians
+            angle = angle_deg * M_PI / 180.0;
+        }        
+        if (m_volume != nullptr && m_volume->text_configuration.has_value()) {
+            m_volume->text_configuration->font_item.prop.angle = angle;
+            float act_angle = angle.has_value() ? *angle : .0f;
+            float diff      = act_angle - prev_angle;
 
-        Selection &selection = m_parent.get_selection();
-        selection.start_dragging();
-        selection.rotate(Vec3d(0., 0., M_PI / 180.0 * diff), TransformationType::Local);
-        selection.stop_dragging();
+            Selection &selection = m_parent.get_selection();
+            selection.start_dragging();
+            selection.rotate(Vec3d(0., 0., diff),
+                             TransformationType::Local);
+            selection.stop_dragging();
 
-        std::string snapshot_name; // empty meand no store undo / redo
-        // NOTE: it use L instead of _L macro because prefix _ is appended inside function do_move
-        //snapshot_name = L("Set surface distance");
-        m_parent.do_rotate(snapshot_name);
+            std::string snapshot_name; // empty meand no store undo / redo
+            // NOTE: it use L instead of _L macro because prefix _ is appended
+            // inside function do_move
+            // snapshot_name = L("Set surface distance");
+            m_parent.do_rotate(snapshot_name);
+        }
     }
 
     // when more collection add selector