Use the Replace panel to relocate one node to the position of another or manually equivalence two nodes. The Replace panel is organized into four columns from left to right. The first column includes node selectors, used to pick the two nodes that will be combined. The second column contains controls to determine the location of the combination, and display the distances between the combined nodes in the X, Y, and Z axes. The right-hand column contains control buttons to reject the replacement or exit the panel.
Replacements occur immediately upon selecting the nodes; there is no command button to trigger the replacement, only to reject (undo) it. The replacement is made permanent when you leave the panel or combine another node pair, so you cannot reject it after leaving the panel and returning. When a node replacement will destroy an element, a pop-up window warns you of this fact.