Omron NB-series Operation Manual page 316

3 Functions of NB-Designer
First click the [Export variables] option to make "Save As" dialog box, and input the file name "t"
with the extension as ".MPL", then save it into the optional folder.
Clicking the [Delete Variable] option and the [Import Variables] option allows the importing
variables. Such operation can be made among the different projects. Select the code which
should be copied if it is a program and right-click the [Copy] followed by pasting the code to the
intended location.
3-274 NB-series Programmable Terminals NB-Designer Operation Manual(V106)