# Organization of the EXACT Toolbox

###### The ExACT Analytical Conduction Toolbox is organized according to:
1. Differential Equation Type (Heat, Laplace, Helmoltz)
2. Coordinate System Type (rectangular, spherical, cylindrical)
3. Body Shape
4. Type of Boundary Condition
###### Body Shape

Within each coordinate system the body shape is determined by the location of the boundaries, with each boundary defined by a constant value of one coordinate; these are called orthogonal bodies. Several body shapes are listed below for each coordinate system:

1. Rectangular: infinite body, semi-infinite body, infinite strip, semi-infinite strip, plate, rectangle, parallelpiped.
2. Cylindrical: solid cylinder, hollow cylinder, finite cylinder, infinite region surrounding a circular hole, thin ring, wedge.
3. Spherical (polar): infinite body, sphere, hollow sphere, infinite region surrounding a spherical void, spherical sector.