diff -r 5549016ab10f -r bebe34c975a8 solutions5/bf.scala
--- a/solutions5/bf.scala	Thu Dec 06 13:15:28 2018 +0000
+++ b/solutions5/bf.scala	Thu Dec 06 13:52:50 2018 +0000
@@ -1,7 +1,7 @@
 // Part 1 about an Interpreter for the Brainf*** language
 //========================================================
 
-object CW10a {
+object CW10a {  // only for generating the Jar file
 
 
 type Mem = Map[Int, Int]
@@ -70,15 +70,15 @@
 //jumpRight("""--[..[[-]+>[.]]--,>,++""", 3, 0)  // => 22 (outside)
 //jumpLeft("""[******]***""", 7, 0)              // => -1 (outside)
 
-// (4) Complete the compute function that interpretes (runs) a brainf***
-// program: the arguments are a program (represented as a string), a program counter,
-// a memory counter and a brainf*** memory. It Returns the
-// memory at the stage when the excution of the brainf*** program
+// (4) Complete the compute function that interprets (runs) a brainf***
+// program: the arguments are a program (represented as a string), a program 
+// counter, a memory counter and a brainf*** memory. It Returns the
+// memory at the stage when the execution of the brainf*** program
 // finishes. The interpretation finishes once the program counter
 // pc is pointing to something outside the program string.
 // If the pc points to a character inside the program, the pc, 
 // memory pointer and memory need to be updated according to 
-// rules of the brainf*** language. Then, recursively, run 
+// rules of the brainf*** language. Then, recursively, the compute 
 // function continues with the command at the new program
 // counter. 
 // Implement the run function that calls compute with the program
@@ -200,6 +200,8 @@
 
 
 // a Mandelbrot set generator in brainf*** written by Erik Bosman
+// (http://esoteric.sange.fi/brainfuck/utils/mandelbrot/)
+
 run(load_bff("mandelbrot.bf"))
 
 
@@ -220,5 +222,4 @@
 time_needed(1, run(b1))
 */
 
-
 }