What is a gstencil file and how do I open a gstencil file?
GSTENCIL is a vector graphics library used by OmniGraffle, a diagramming and sketching application. It is similar to a clipart library since it contains pre-made images, called stencils, that can be inserted into a diagram. It is saved in an XML format but encodes the image data as blocks of text.
Relevant gstencil file links:How to open gstencil file on Youtube
How to open gstencil file on Wikipedia
How to open gstencil file on Microsoft.com