Getting Started 19
:w
Scientific notation. Displays numbers in scientific notation.
{
Backspace. Deletes one number at a time to the left of the 
cursor, starting with the most recently entered number.
:x
Reset menu. Resets some, or all, of the registers.
:o
Insert. Inserts a number into a list.
:j
Delete. Deletes a number from a list.
:p
Calculates sine.
:q
Calculates cosine.
:r
Calculates tangent.
:s
Math menu. Includes trigonometric and inverse 
trigonometric functions, probability, absolute value, 
logarithmic functions, and PI.
:k
Calculates natural log.
Table 1-3 Keys and Descriptions
Keys Description