some clarification

Assignments.md

@@ -24,8 +24,13 @@ whitespace characters between words of the output.
 ### Stages
 
 A stage is a logical unit of the testing process. It specifies how to do a step 
-in the build process and how to test if it behaves correctly. The following is 
-contained in its configuration:
+in the build process and how to test if the student's submission behaves 
+correctly. After the evaluation, the worker outputs a log for every processed 
+stage that contains information such as which tests passed and how many 
+resources were used.
+
+A stage's configuration contains the following (this doesn't yet map exactly to 
+a particular configuration file format):
 
 - **Name** - a unique string identifier of the stage
 - **Build command** (optional) - used to prepare the submitted files for this 
@@ -34,18 +39,23 @@ contained in its configuration:
   stage
 - **Test command** - used to run one specific test
 - **Test input policy** - how to pass the test input to the program?
-	- redirect it to its standard input
-	- pass the name of the input file as an argument
+	- **redirect** it to its standard input (default)
+	- pass the path to an input file as an **argument**
 - **Judge** - which judge should be used to evaluate the solution's output? 
   Custom judges can be supplied with the assignment.
+- **Limits** - how much memory, time, etc. can be used when evaluating a test
 - **Error policy** (optional) - what should we do when a test fails?
-	- **interrupt** the stage (default)
-	- **continue** with the next test
-	- **jump** to another stage (TODO cycle detection?)
+	- **interrupt** the evaluation (default)
+	- **continue** with another **test**
+	- **continue** with another **group**
+	- **jump** to another stage
 - **Success policy** (optional) - what to do when all tests pass?
 	- **jump** to another stage (the next one by default)
 	- **end** the evaluation, even if there are still unprocessed stages
 
+When jumping between stages, it's only possible to jump forward, so that no 
+stage is evaluated multiple times. 
+
 ## Case study
 
 We present some of the courses that might use ReCodEx to evaluate homework 
@@ -54,8 +64,8 @@ of stages.
 
 ### Simple programming exercises
 
-For example introductory programming courses such as Programming I or 
-Programming in Java.
+For example introductory programming courses such as Programming I or Java 
+programming.
 
 In the simplest case we only need one stage that builds the program and passes 
 the test inputs to its standard input. We will use the C language for this