Horizontal, vertical, and lines at any angle
At any drawing:-
● Select: Tools - Line
or
 Select option from Toolbar
 
 Select option from Toolbar
 Use 
 mouse to draw object
 Use 
 mouse to draw object
● Move to start point
● Click left button
● Move mouse in direction of line (program draws a new line)

● Click left button to confirm
 Edit 
 options and Properties - 
 right click with the mouse to show 
 the menu of edit options and properties. These vary for each type of drawing 
 object. The property values can be used to set start point, end point, 
 length, thickness ... of each object accurately.
 Edit 
 options and Properties - 
 right click with the mouse to show 
 the menu of edit options and properties. These vary for each type of drawing 
 object. The property values can be used to set start point, end point, 
 length, thickness ... of each object accurately.
Notes
- If the grid is switched on the starting and end points of the line always move (snap) to the nearest grid point. This makes it easy to ensure that lines meet and that horizontal and vertical lines are straight.
