VARKON Version 1.15 1997-10-16

### Using the mouse

VARKON assumes a mouse with two or three buttons. The left button is always used to make selections and the right button is used to quit the current operation. If a middle button is present it is used to quit the current operation and return to the main menu.
Many VARKON operations include the use of the mouse to indicate or outline something in a view window. The ZOOM-operation for example where you first press the left button, then move the mouse with the button still down and finally release the button. Entity selection is another example where you use the mouse and its left button or the keyboard to indicate a certain entity. Whenever VARKON wants you to use the mouse in a view window the shape of the cursor changes from the normal pointer to a crosshair.
VARKON also supports the use of the keyboard together with the mouse. Here is a complete list of keys that can be used instead of the mouse buttons. Each key is actually configured through a t-string in $VARKON_MDF/texts.INC.

Key | t-string | Description
p | t80 | Nearest point
l | t81 | Nearest line
a | t82 | Nearest arc
c | t83 | Nearest curve
s | t84 | Nearest surface
C | t85 | Nearest coordinate system
t | t86 | Nearest text
L | t87 | Nearest linear dimension
D | t88 | Nearest diameter dimension
R | t89 | Nearest radius dimension
A | t90 | Nearest angular dimension
X | t91 | Nearest xhatch
c | t92 | Same as left mousebutton
g | t93 | Nearest position in active grid
P | t95 | Nearest part
b | t96 | Nearest b_plane
i | t97 | Enter identity from keyboard
w | t98 | Use window mode
SPACE | t99 | Same as left mousebutton
o | t102 | Outside window
c | t103 | Completely inside/outside
RETURN | - | Quit the operation
TAB | - | Quit and return to main menu
ctrl-a | - | Display help
ctrl-b | - | Show position-menu

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