PhotoFiltre has two types of selection. The first type gathers the automatic
forms (rectangle, ellipse, triangle, rhombus). The second type corresponds to
the lasso modes and polygon. They both allow defining a form personalized
by drawing contour or by a succession of lines. Each selection can be
safeguarded in a file to be re-used later on via the "Selection" menu.
The menu tem "Edit / Stroke and fill" makes it possible to draw and fill these
forms in the image. You can also apply symmetries and rotations to the
selection using the menu "Selection / Transformation".
Some forms of preset selections (stars, arrows...) are available on my web
site.