You can annotate the area reinforcement region using custom symbols and tags. This provides information about the type of reinforcement and specific boundary details.
Place an Area Reinforcement Symbol
 Symbol panel
Symbol panel
 (Area Reinforcement Symbol).
 (Area Reinforcement Symbol). 
   Symbol panel
Symbol panel
 (Area Reinforcement Symbol)
 (Area Reinforcement Symbol)
 (Auto Place). The first click on the area reinforcement automatically places the tag at the center of it.
(Auto Place). The first click on the area reinforcement automatically places the tag at the center of it. 

Place an Area Reinforcement Tag
 Tag panel
Tag panel
 (Tag By Category).
 (Tag By Category). 
  
You can include major spacing properties by editing the tag label. Bottom/Interior Major Spacing and Top/Exterior Major Spacing are available Category Parameters.
 Settings panel
Settings panel
 (Project Units). Under Reinforcement Volume or Reinforcement Length, adjust the units, rounding, and symbol representation as needed.
 (Project Units). Under Reinforcement Volume or Reinforcement Length, adjust the units, rounding, and symbol representation as needed.