4  Getting Started
Boxed Key Functions
There are three shifted key functions on the calculator that are used to change the 
operation of another key's function. These three tertiary functions, 
]O, 
]o and ]r, are bound by blue boxes to show that they oper-
ate differently. These special functions require subsequent key presses to operate. 
For example, the functions associated with the clear key, 
M, include: 
For more information on the calculator’s keys and basic functions, refer to chapter 
2, Getting Started in the HP 10bII+ Financial Calculator User’s Guide.
Table 1-2 Clearing functions
Keys Associated Function
M
Clear display.
\N
Clear all memory.
]Oj
Clears bond memory.
]OY
Clears break-even memory.
]OJ
Clears TVM memory.
]O:
Clears cash flow memory.