MoTeC CDL3 - Manual (Page 81)

MoTeC Appendices 81
Tree Structure
A Tree Structure is used to select items from a hierarchical list
The UP ARROW key moves the cursor up (selects the item above)
The DOWN ARROW key moves the cursor down (selects the item below)
The RIGHT ARROW key expands; expandable branches indicated by a
plus sign (+)
The LEFT ARROW key collapses; collapsible branches indicated by a
minus sign (-)