Tcl/Tk-based programs. II. CONVROT: a program to recalculate different rotation descriptions

A program, CONVROT, which can convert the rotation description from any of the widely used molecular-replacement systems to any other, is described. A common point of view is used, which assumes a rotation matrix applied to the rotated body. A convenient user-friendly interface is provided based on the Tcl/Tk macrolanguage.