diff -r 556cd74cbba9 -r c45d3cd9a749 progs/lecture1.scala
--- a/progs/lecture1.scala	Thu Nov 02 14:47:55 2017 +0000
+++ b/progs/lecture1.scala	Sat Nov 04 16:17:19 2017 +0000
@@ -226,7 +226,7 @@
 gcd_db(48, 18)
 
 
-// Assert/Testing
+// Asserts/Testing
 //================
 
 assert(gcd(48, 18) == 6)
@@ -302,7 +302,7 @@
 
 
 // function for looking up stockmarket data 
-def price_lookup(symbol: String): String = {
+def price_lookup(symbol: String) : String = {
   val url = "https://download.finance.yahoo.com/d/quotes.csv?s=" + symbol + "&f=snl1"
   Source.fromURL(url).mkString.drop(1).dropRight(2)
 }
@@ -373,11 +373,12 @@
 // run Scala on the commandline. There are also at least 
 // four IDEs you can use with Scala:
 //
-//  (0) Some general information for setting up IDEs
+//  (0) Some general information about setting up IDEs
 //	    with Scala support can be found at
 //
 //         http://docs.scala-lang.org/getting-started.html 
 //
+//
 //  (1) Eclipse for Scala (one big bundle)
 //
 //         http://scala-ide.org/download/sdk.html
@@ -388,7 +389,7 @@
 //		   http://docs.scala-lang.org/getting-started-intellij-track/getting-started-with-scala-in-intellij.html	  
 //
 //  (3) Sublime (not free, but unlimited trial period; 
-//	    needs SublimeREPL plugin)
+//	    needs Scala and SublimeREPL plugin)
 //
 //         https://www.sublimetext.com
 //
@@ -406,6 +407,13 @@
 //   
 // There is also Scala support in the Atom editor, but my
 // experience is mixed. People also use Scala with Vim and Jedit.
+// Finally there is an online editor specifically designed for 
+// running Scala applications (but do not blame mne if you lose all 
+// what you typed in):
+//
+//      https://scalafiddle.io 
+//
+//
 //
 // All of the IDEs above support a REPL for Scala. Some of them have
 // the very nifty feature of a Scala Worksheet -- you just save your
@@ -415,6 +423,7 @@
 //
 //
 // Scala Library Docs
+//====================
 //
 //  http://www.scala-lang.org/api/current/
 //