New Library... - This option allows you to create a new tile library file from the collection of images.

Open Library... - This option allows you to open an already compiled library file.

Open Source Image... - This option allows you to open an image file that you want to use as a mosaic main theme. Active only when library is open.

Open project... - This option allows you to open an already existing mosaic project.

Open Recent Library - Use this option to open one of the last used libraries.

Open Recent Source Images - Use this option to open one of the lasts used main theme images.

Open Recent Project - Use this option to open one of the last used projects.

Save Project - This option allows you to save the current project i.e. save last changes. Active only when project is modified.

Save Project As... - This option allows you to save the current project with a different name. Active only when project is opened.

Revert Project to Saved - This option allows you to revert modified project file i.e. discard last changes. Active only when project is modified.

Close Project - This option allows you to close current project. Active only when project is opened.

Batch Mosaic Job - Use this to convert a collection of image files into mosaic. Active only when library is opened. See details here.

Export Mosaic to File - This option will bring up the Output mosaic setup screen. This option allows you to save current mosaic project as new image file. Active only when project is opened.