test doc structure

docs/funcs_global-variables.md

@@ -1,29 +1,36 @@
-# Global variables
+## Global variables
 
 Useful variables that are defined globally, and can be used within functions as a parameter.
 
 - [mouse](#mouse)
 - [time](#time)
 
----
-
 ### mouse
-* .x :: x position of mouse
-* .y :: y position of mouse
 
-Example:
-- Control the oscillator frequency with the mouse position:
-```
+`mouse`
+
+* `.x` :: x position of mouse
+* `.y` :: y position of mouse
+
+#### Example
+
+Control the oscillator frequency with the mouse position:
+
+```javascript
 osc(() => mouse.x).out(o0)
 ```
 
 ### time
 
-Example:
-- Control the oscillator using a sine wave based on the current time:
-```
-osc(
-  ({time}) => Math.sin(time)
-)
+`time`
+
+* `time` :: the current time
+
+#### Example
+
+Control the oscillator using a sine wave based on the current time:
+
+```javascript
+osc( ({time}) => Math.sin(time) )
 .out(o0)
 ```