File
New - create new document.
Open Project - open Image Splitter Project (*.imsp-file).
Save as... - save created document.
            - HTML File, *.html - save document in HTML-format
            - Image Splitter Project, *.imsp - save document as project. Later You can open this project and continue editing.

Edit
Undo - delete last created line
Reset - delete all lines.

Drawing
Horizontal line - draw horizontal lines
Vertical line - draw vertical lines
Auto line - split picture into equal slices. (A number of vertical and horizontal cells depends on ColCount and RowCount values).
Select - slice selection mode.
Snap to grid

View
Zoom - change zoom of the picture.
Area pattern - change a slice pattern:
            - Cross
            - Diagonal
            - DiagonalCross
'Area pattern' means pattern, which fills up areas shown.
Line color - lines color
Grid size - grid cell size for Snap To Grid option.
Show area setting box - show area settings dialog automatically when slice is created.

HTML-editor - easy to use built-in editor of HTML files.
Testing - test created image map with your default web-browser.

Settings panel

Apply - Apply image settings to selected slices. You may change the format of all slices (use Apply to all slices mode).

Optimize - Press this button and the program will choose by itself the format for each slice to minimize size of the image.