|  |  D.3.1.5 flatten Procedure from librarymatrix.lib(see  matrix_lib).
 
Example:Usage:
flatten(A); A matrix/smatrix
Return:
ideal, generated by all entries from A resp. all columns of A appended
 |  | LIB "matrix.lib";
ring r = 0,(x,y,z),ds;
matrix A[2][3] = 1,2,x,y,z,7;
print(A);
==> 1,2,x,
==> y,z,7 
flatten(A);
==> _[1]=1
==> _[2]=2
==> _[3]=x
==> _[4]=y
==> _[5]=z
==> _[6]=7
flatten(smatrix(A));
==> 1,
==> y,
==> 2,
==> z,
==> x,
==> 7 
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