Appendix A: Functions and Instructions 570
checkTmr(starttime) Returns the number of
seconds since you used
startTmr to start the timer.
The starttime is the value
displayed by startTmr.
y N
checkTmr(
Circle(X,Y,radius)Draws a circle with center
(X,Y) and radius.y <
DRAW
9:Circle(
Clear Entries Clears the contents of the
Last Entry storage area. y L
MEMORY
3:Clear Entries
ClockOff Turns off the clock display
in the mode screen. y N
ClockOff
ClockOn Turns on the clock display
in the mode screen. y N
ClockOn
ClrAllLists Sets to 0 the dimension of
all lists in memory. y L
MEMORY
4:ClrAllLists
ClrDraw Clears all drawn elements
from a graph or drawing. y <
DRAW
1:ClrDraw
ClrHome Clears the home screen. †
I/O
8:ClrHome
F
unction or
Instruction/Arguments
Result Key or
Keys/Menu or
Screen/Item