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I wrote down a covariance matrix through the following command:

 A := Matrix([[a, b], [b, c]], shape = symmetric, attributes = [positive_definite]);

and then I computed the Cholesky decomposition of this matrix using afterwards the command simplify as well

B := LUDecomposition(A, method = Cholesky)

C:=simplify(%)

What I obtained is this matrix

Matrix(2, 2, {(1, 1) = sqrt(a), (1, 2) = 0, (2, 1...

I have a file  g:/temp.mw
From a seperate maple worksheet I want to modify the Document Property `Author` to  "aname" in the file g:/temp.mw

One could simply ...
open the worksheet g:/temp.mw  and
with(DocumentTools):
SetDocumentProperty(`Author` , "aname"):

That's okay, but how to change it remotely?  I don't know if it's even possible.  I was trying ...

fd:=fopen(`g:/temp.mw`,WRITE):
fprintf(fd,SetDocumentProperty(`Author`,"aname"))...