Some update in the v0.1 spec.

draft.fun

@@ -150,7 +150,7 @@ cast(a)
   return CASTED_variable_from_one_to_another_existing_type(a)
 
 // External functions need f as a prefix to define the function.
-f get_string(a_string, b_string)
+fun get_string(a_string, b_string)
   return a_string + " " + b_string
 eof
 

spec/v0.1.md

@@ -95,7 +95,7 @@ boolean flag = true
 
 ```fun
 byte b1 = 0x23
-byte b2 = "A"
+byte b2 = 'A'
 ```
 
 ### Array
@@ -119,10 +119,10 @@ private number count = 42
 
 ## 5. Operators
 
- - Arithmetic: + - * / %
- - Comparison: == != > < >= <=
- - Boolean: && || !
- - Assignment: =
+ - Arithmetic: `+`, `-`, `*`, `/`, `%`
+ - Comparison: `==`, `!=`, `>`, `<`, `>=`, `<=`
+ - Boolean: `&&`, `||`, `!`
+ - Assignment: `=`
 
 ## 6. Control Flow
 
@@ -136,8 +136,6 @@ else if(a == b || h != i)
 else
   if(k < 1 && l > 1)
     print "Buh!"
-  fi
-fi
 ```
 
 ### For Loops
@@ -168,10 +166,10 @@ print "Hello, Fun!"
 
 ### User-Defined Functions
 
-Must be declared with the f prefix.
+Must be declared with the fun prefix.
 
 ```fun
-f add(a, b)
+fun add(a, b)
   return a + b
 ```
 
@@ -205,12 +203,14 @@ From the current working directory:
 Full path:
 
 ```fun
-&#35;include /home/user/project/lib.fun
+#include /home/user/project/lib.fun
 ```
 
 ## 9. System Integration
 
-### system
+### Blocking
+
+#### system(cmd)
 
 Executes a command, returns exit code.
 
@@ -218,7 +218,7 @@ Executes a command, returns exit code.
 system("ls -l")
 ```
 
-### exec
+#### exec(cmd)
 
 Executes a command, returns stdout.
 
@@ -226,14 +226,46 @@ Executes a command, returns stdout.
 string result = exec("date")
 ```
 
-### spawn
+### Non-Blocking
+
+#### nsystem(cmd)
+
+Executes a command, returns exit code.
+
+```fun
+system("ls -l")
+```
+
+#### nexec(cmd)
+
+Executes a command, returns stdout.
+
+```fun
+string result = exec("date")
+```
+
+#### nspawn(cmd)
 
 Executes a command asynchronously, returns process ID.
 
 ```fun
-number pid = spawn("sleep 10")
+number pid = nspawn("sleep 10")
 ```
 
+### Helpers
+
+#### wait(pid)
+
+Blocks until process finishes, returns exit code.
+
+#### read(pid)
+
+Returns captured stdout (for processes started with nexec).
+
+#### kill(pid)
+
+Terminates process.
+
 ## 10. Error Handling
 
  - No implicit type coercion.