Variable -- an optional argument

Functions with optional argument named Variable:

• GF(...,Variable=>...) -- see GF -- make a finite field
• Grassmannian(...,Variable=>...) -- see Grassmannian -- compute the ideal of the Grassmannian of linear subspaces of a vector space
• normalCone(Ideal,RingElement,Variable=>...)
• normalCone(Ideal,Variable=>...)
• Schubert(...,Variable=>...) -- see Schubert -- compute the Plücker ideal of a Schubert variety