Detailed Drawings > Annotating the Drawing > Working with Symbols > Defining Symbols > Setting the Symbol Directory > About the System Symbols Area
  
About the System Symbols Area
The symbols directory contains libraries of Creo Parametric symbols that are available with the Detailed Drawings module. This area is usually read-only.
The Welding Symbols Library, for example, provides a collection of generic system symbols according to the ANSI standard, and a collection of symbols according to the ISO standard. Using this library, you can create a variety of welding, brazing, and examination symbols in a drawing. Before you create an instance, familiarize yourself with the procedure for adding custom instances.