This button shows the prior element.	Example:	[6]	-->	[5]
	This button changes the shell upward.	Example:	[55]	-->	[37]
	This button changes the shell downward.	Example:	[55]	-->	[87]
	This button shows the next element.	Example:	[5]	-->	[6]

The name of the element is shown in this strip.