Switch between edit and display mode in a list

Display, Edit

Enter

Move from cell to cell through a list (grid)

Display

Left Arrow
Right Arrow
Up Arrow
Down Arrow

Move to different areas within a list: portlet icons, column headers, body of list, buttons

Display

Tab (Forward)
Shift+Tab (Back)

Switch to display mode

Edit

Esc or Enter

Move left or right within a cell

Edit

Left Arrow
Right Arrow

Move from editable cell to editable cell

Edit

Tab (Forward)
Shift+Tab (Back)

Open a drop-down list or a date selector

Edit

Enter

Move through selection items in a drop-down

Edit

Up Arrow
Down Arrow

Select a highlighted value in a drop-down or a date selector

Edit

Enter

Highlight a date in a date selector

Edit

Down Arrow

Add a new line in a long text area

Edit

Ctrl+Enter