A drawing can contain two types of render presets: standard and custom. While both
types are named sets of rendering settings, there are a few key differences. The following
explains the main differences of the two types:

• Custom render presets can be modified and removed from a drawing, and are available
  only in the drawing which they were defined.
• Standard render presets cannot be modified, but are available in each opened drawing.

The drop-down list on the Render Presets Manager palette or Render panel on the ribbon
can be used to set a render preset current. Custom render presets saved in a drawing
are listed near the top and standard render presets are listed near the bottom.

While a standard render preset cannot be modified, a copy of a standard render preset
can be created. Copying a render preset results in the creation of a new custom render
preset. A new custom render preset can also be created with a set of default values.
Once a custom render preset has been created, the name, description, and render settings
of the custom render preset can be modified.