Key
    straighten
    (straighten, Filling, Module)
  Headline
    Given a tableau of shape lambda express it as a linear combination of SST in the given Schur module 
  Usage
    straighten(T,M)
  Inputs
    T: Filling
      Any filling with shape mu and entries between 0 and rank(E)-1. 
    M: Module
      A Schur module of the form S_{mu}(E) for some partition mu.
  Outputs
    T2: 
  Description
    Text
       A linear combination of semistandard tableaux representing  T in M.
    Example 
       bla
  Caveat
    The function F should output lists of pairs where the second component is a filling of the partition corresponding to N.
  SeeAlso
    schur