version 6.8
To simultaneously view different parts of a 4D View area, you may want to scroll through a part of this area without affecting the display of the other section: these sections are called "panes".
A horizontal pane is the space between two visual boundaries, which can be: the upper portion of the spreadsheet, a separator in the vertical scroll bar, the lower portion of the spreadsheet.
A vertical pane is the space between two visual targets, which can be: the left side of the spreadsheet, a separator in the horizontal scroll bad, the right side of the spreadsheet.
As such, there is a default horizontal and vertical pane, which cover the entire area.
Several panes can exist at the same time in each of the two spreadsheet dimensions.
The commands of this theme allow manipulating the panes of a 4D View area: add or delete a pane (horizontal or vertical), get or assign pane properties.