Trimming is the subsequent process carried out after a successful
drawing process and prior to performing springback analysis. It allows the user
to perform hole piercing and/or trimming operations on the drawn parts. It also
allows the user to add holes or lances to the drawing process to change the
deformation characteristic. The Trimming process consists of four basic pages
such as General and Blank pages described in Section 8.3.4, Forming.