User Guide

14 CATALOG, Strings, Hyperbolic Functions
sub(
sub( returns a string that is a subset of an existing string. string can be a string or a
string variable. begin is the position number of the first character of the subset. length
is the number of characters in the subset.
sub(string,begin,length)
Entering a Function to Graph during Program Execution
In a program, you can enter a function to graph during program execution using these
commands.