How to export grease pencil's layers to another Blender file? I want to export all grease pencil layers in a Blender file into another file, because I need to merge some drawings in one animation, but can't find any options to export Grease Pencil layers.

Additionally I no want to convert the grease pencil layers into a curve with Alt+C, because the program freeze and can't work with it.
I found a way to do this using Link or Append Data Block from Blender file, on the File menu.