You can also specify the location of the endpoints of the line segments by reading the coordinates from a file. Click on the open file button. The format of the text file is similar to that of an ifs file. The set of points starts after the opening bracket. Comments can be specified by starting the line with a semicolon. The points should be given one per line, concluding with a closing bracket. Here is an example of the terdragon constructed from a line fractal design (see image below):
Line Fractal Design
; terdragon
0 , 0
0.5 , 0.2886751
0.5 , -0.2886751
1 , 0
}