Texas Instruments TI-83 - page 669

TI-83 Plus Tables and Reference Information 666
Function or Instruction/
Arguments Result Key or Keys/ Menu or Screen/Item
GridOff Turns off grid format. † y .
GridOff
GridOn Turns on grid format. † y .
GridOn
G-T Sets graph-table vertical split-screen
mode. † z
G-T
Horiz Sets horizontal split-screen mode. † z
Horiz
Horizontal y Draws a horizontal line at y.y <
DRAW
3:Horizontal
identity(dimension)Returns the identity matrix of
dimension rows × dimension
columns.
y >
MATH
5:identity(
:If condition
:commandA
:commands
If condition = 0 (false), skips
commandA.† 
CTL
1:If
:If condition
:Then
:commands
:End
:commands
Executes commands from Then to
End if condition = 1 (true). † 
CTL
2:Then