Texas Instruments TI-89 Titanium User Manual page 684

Name of current folder
You cannot create a folder within another folder.
The system variables in the
current folder.
User-defined variables are stored in the "current folder" unless you specify
Note:
otherwise.
Memory and Variable Management
MAIN
System variables
Variables
User-defined
a=1, b=2, c=3
f(x)=x³+x²+x
ALG102
User-defined
b=5, c=100
f(x)=sin(x)+cos(x)
DAVE
User-defined
a=3, b=1, c=2
f(x)=x²+6
MATH
User-defined
a=42, c=6
f(x)=3x²+4x+25
folder are always directly accessible, regardless of the
MAIN
681