MLTransferExpression() intMLTransferExpression(MLINKdest,MLINKsrc) transfers an expression from one MathLink connection to another. src and dest need not be distinct. src and dest can be either loopback or ordinary links. See the Mathematica book: Section 2.12.12.
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT. SEE THE DOCUMENTATION CENTER FOR THE LATEST INFORMATION.