SHIFT permits translation of interior or boundary nodes in the x and y directions. Picking SHIFT brings up the following panel on the right:
As an example, Pick 0.000 opposite X Shift and enter the value 1.0 in answer to the subsequent prompt. Then Pick SHIFT INTERIOR. The interior nodes in the active polygon will be shown shifted one problem length unit to the right. If this new configuration is confirmed, the node coordinates in the node file will be changed accordingly.