Description in text form

Chalks

• Chalks come in all 16 Minecraft colors
  
• Crafted with a piece of Calcite and any dye. They can also
  be found in some underground chests or in a village
  
  
• Click on a full side of a block to draw a mark
  
• Direction of the mark depends on the click location relative
  to the center of the face
  
• Dot mark is drawn by clicking in the center
  

Symbols

• You can also draw a couple of different symbols
  
• Right-click while sneaking to open a menu where you can
  choose desired symbol to draw
  
• Some symbols will be unlocked by default, others can be
  unlocked by completing advancements
  

Glowing

• Marks can be made glowing by applying Glowstone Dust or
  Glow Ink Sac to them
  
• Glowing marks are quite bright and will slightly light up their
  surroundings
  

Chalk Box

• Chalk Box is a convenient way to store and use your chalks
  
• It can be opened by using it while not looking at any block
  or right-clicking it in the GUI
  
• Marks will be drawn with a leftmost chalk in order
  
  • To quickly change active chalk - use the box while
    sneaking and not looking at any block
    
• You can draw glowing marks with Chalk Box by adding
  glowing items in a special slot