Spline Toolbox

Functions - By Category
The Spline Toolbox provides several categories of commands.

Note    Not all the entries shown in this listing actually have a reference page. Those that do not appear in parentheses.

GUIs	Graphical interfaces that enable you to experiment with splines
Construction of Splines	Create splines that satisfy conditions you specify
Operators	Evaluate, plot, differentiate, integrate, find the zeros or the extrema of, or otherwise make use of, splines
Work with Breaks, Knots, and Sites	Generate or modify breaks, knots, sites, or locate sites within a break or knot sequence
Customized Linear Equation Solver	Linear equation solver customized for spline work
Information About Splines and the Toolbox	Information about splines and the toolbox
Demonstrations	Examples of spline creation and use
Utilities	Something for experts

For ease of use, most functions have default arguments. In the reference entry under Syntax, we usually first list the function with all necessary input arguments and then with all possible input arguments. When there is more than one optional argument, then, sometimes, but not always, their exact order is immaterial. When their order does matter, you have to specify every optional argument preceding the one(s) you are interested in. In this situation, you can specify the default value for an optional argument by using [] (the empty matrix) as the input for it. The description in the reference page tells you the default value for each optional input argument.
As always in MATLAB, only the output arguments explicitly specified are returned to the user.

Reference

GUIs