displacement recorder

[foadEng]

Dear all,
I have a question about the displacement recorders in opensees. In version 2.1.0 there is a command which returns the displacement or rotation at specified node:
nodeDisp $nodeTag $dof

also we have a node recorder command:

recorder Node <-file $fileName> <-xml $fileName> <-time> <-node ($node1 $node2 ...)> <-nodeRange $startNode $endNode> <-region $RegionTag> <-node all> -dof ($dof1 $dof2 ...) $respType

this command could returns nodal displacements too!
I wanted to know that what is the difference between the values which these two commands give us?! and also in an incremental pushover analysis, the values which these commands return at each step, are absolute or relative? I mean the values are the increment in displacement in that special step or They are comulative from the beginning of the analysis?

[vesna]

Using these two commands you will get the same displacements if you consider the same node and the same degree of freedom.

When performing pushover analysis the total (absolute) displacements are recorded (returned) using these two commands.