GGU-CAD: "Arial, Standard.stz, etc." menu items

The fonts loaded using "Fonts/Edit" are listed here. A (W) following the name of the font designates a WINDOWS font. A (V) designates a vector font. The active font is marked with a tick. This font is used as the default if new text is added to the drawing using the menu item "Draw/Text". The default font can be changed simply by clicking on the required new font. As of this point the new font is used. Texts previously written in a different font are not affected by the change.