I needed some help with printing Fractal tree sequences.

I want to make a HTML page that would have a: "Choose File" Option. For example something like this:

The uploaded file will be of .txt format which in turn will contain instruction like:

len: 1 iter: 6 rot: 60.0 60.0 60.0 rep: R,F rep: L,F start: R L: R+L+R R: L-R-L

where len represents length of each segment to draw, iter represents the number of iterations to apply, rot represents the X, Y, and Z rotations respectively, rep represents string that results after applying the production rules "iter" times. For each occurence of "R" in this string, it is replaced with the character "L". "L" may be ommitted, in which case all occurences of "R" are removed from the string. Rep can be included in 0 or more times. Start tells where to start the initial turtle string, and some number of production rules of the form: "L: R", where "L" is a single character representing the left-hand side of the rule, and "R" is a sequence of characters representing the replacement string for "L". I need to use this instructions in the JavaScript to convert this instructions into tree sequence.

I need to output the tree sequence on the screen or on the console. The tree sequence should look something like this:

The above image just shows an example of the output, not the correct output for the instructions provided.

Thanks for all the help.

Choose File No file chosen Something here Choose File No file chosen Something here