Add some examples for variable_content and console_output

Author: m-hurlow

docs/console_output.md

@@ -14,3 +14,28 @@ an attempt will be made to convert to a float and apply a tolerance. This avoids
 e.g. `0`, `0.0` and `0.00000005` should all be considered the same. 
 
 This function is implemented in `checks/output_check.py`.
+
+## Examples
+
+<table>
+  <tr>
+    <th>Response</th>
+    <th>Answer</th>
+    <th>Correct?</th>
+  </tr>
+  <tr>
+    <td><code>print("Hello, World")</code></td>
+    <td><code>print("Hello, World!")</code></td>
+    <td>No</td>
+  </tr>
+  <tr>
+    <td><code>print(0)</code></td>
+    <td><code>print(0.0)</code></td>
+    <td>Yes (if <code>output_inexact</code> is true)</td>
+  </tr>
+  <tr>
+    <td><pre>print(1)<br>print(2)<br>print(3)<br></pre></td>
+    <td><pre>for i in range(1, 4):<br>  print(i)</pre></td>
+    <td>Yes</td>
+  </tr>
+</table>

docs/parameters.md

@@ -4,6 +4,7 @@ Parameters are communicated from the web application to the evaluation function
 which are passed to `evaluation_function()` as a dictionary.
 
 This dictionary has several fields:
+
 - `global_variables_check_list`: This is either a list of strings, or a comma-delimited string
   containing a list of variable names to check. If this list is present, a
   [global variable check](variable_content.md) is performed, and the given variables are compared

docs/variable_content.md

@@ -20,3 +20,27 @@ can detect this, and still return a correct result. This facility is experimenta
 that any future developers consider improving this feature, and possibly gate it behind a parameter. 
 
 This checking function is implemented in `checks/global_variable_check.py`.
+
+## Example
+
+The response in this case will be marked correct.
+
+Response:
+```python
+test1 = []
+for i in range(10)
+    test1.append(i)
+
+test2 = 10 + 32
+```
+Answer:
+```python
+test1 = [i for i in range(10)]
+test2 = 42
+```
+Params:
+```json
+{
+    "global_variables_check_list": ["test1", "test2"]
+}
+```