Photoshop
provides multiple Pen tools. The standard Pen tool draws with the greatest
precision; the Freeform Pen tool draws paths as if you were drawing
with pencil on paper, and the magnetic pen option lets you draw
a path that snaps to the edges of defined areas in your image. You
can use the pen tools in conjunction with the shape tools to create
complex shapes. When you use the standard Pen tool, the following
options are available in the options bar:
-
Auto Add/Delete,
which lets you add an anchor point when you click a line segment
or delete an anchor point when you click it.
-
Rubber Band, which lets you preview path segments as you
drag between clicks.

Before drawing with the Pen tool, you can create
a new path in the Paths palette to automatically save the work path
as a named path.
For more information about the modes in which you can draw with
the Pen tools, see Drawing modes.