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About the Test Set
Overview of key types
second page of keys.
In some key menus, a key label is highlighted to show which key has been selected from multiple
available choices. And the menu is immediately exited when you press one of the other keys. For
example, when you press the Select Marker key (in the Marker menu), it brings up its own menu of keys.
The Maker 1 key is highlighted. When you press the marker 2 key, the highlight moves to that key and
the screen returns to the Marker menu.
If a displayed key label shows a small solid-black arrow tip pointing to the right, it indicates that
additional key menus are available. If the arrow tip is not filled in solid then pressing the key the first
time selects that function. Now the arrow is solid and pressing it again brings up an additional menu of
Key Group