This can be used to change the fonts and size of the type in the document area and in the editors. This button will display a list of available fonts in a window on top of the document area (figure 24). The list is determined dynamically depending on the particular X server it is used. Therefore, users should not be surprized to see different list of fonts when using different machines. Click on the desired font to select it. The format of the font listing is:
type name -- size- additional technical parameters
