# NOMADS Development

Library Object Selection |

Libraries and objects are central concepts in NOMADS and Webster+ development. Libraries are Keyed data files used by PxPlus to store the various object definitions created in NOMADS. The object definitions contained within a library represent all the components that will be generated by *winproc, the NOMADS Engine, to create your graphical interface.

This Help section explains what libraries and objects are, how they are created, and how they are accessed and maintained using Library Object Selection.

You can also access library objects from the IDE Main Launcher. See Accessing Library Objects from IDE.

(IDE tasks for accessing library objects were added in PxPlus 2023 Update 1.)

You can keep all of your object definitions in one library or maintain multiple libraries (for the organization of larger applications). Even if you start by creating a single library, the NOMADS toolkit includes general maintenance utilities that allow object definitions to be transferred between libraries as needed. See Maintaining Library Objects.

## See Also

Opening a Library File
Console and Object List
Creating Library Objects