Help System (web edition)

Also names can be given to constants and expressions. For example, if
we write in the edit field
     Volume of a sphere with radius R is Vol=4/3*pi*R^3
     where pi=3.14159265.
     Let now R=10. Then Vol=_
and double-click or press ESC we shall have the display
     Volume of a sphere with radius R is Vol=4/3*pi*R^3
     where pi=3.14159265.
     Let now R=10. Then Vol=4188.7902

  M = Matrices in editorial computing 
  S = Survo data sets in editorial computing 
  A = More information on arithmetics