Juniper Allegro CE Owner's Manual page 21

Task Manager
Press the Task Manager key to view all of the programs that are
currently running. Select which program you want to be in by using
the up and down arrow keys to highlight the desired program and
pressing ENTER.
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Start Menu
Press the BLUE shift key and the <Start> key to view the Windows CE
Start Menu. Use the arrow keys to move up and down the menu. Press
the ENTER key to make your selection.
The Task Manager and Start Menu functions have been provided to
speed up operation. You do not have to use the touchscreen and
stylus to bring up the Start Menu or to change tasks. These keys are
also handy when the Taskbar has been hidden.
Right Mouse Click
Press the Alt key and touch the screen with a stylus to achieve a right
mouse click. In many Windows CE programs, when you right click on
an item a menu is displayed listing functions and options that
pertain to the item.
Hardware Features Page 2-9