Update Ground Types

Ground-Types.md

@@ -1,7 +1,43 @@
-Ground has 5 built-in types, which all hold a different purpose.
+## Variable Types
+
+Ground has 5 built-in types, which are all used to hold varying data.
 
 - int: This stores a signed 64-bit integer. As CGround is written in C, integer overflow/underflow is **undefined behaviour**.
+
+Examples: `46`, `-17`
 - double: This stores the same values as a C double, i.e. 1 bit sign, 11 bit exponent, 52 bit mantissa.
-- string: This stores an immutable sequence of characters, stored in memory as a `const char*`.
-- char: This stores a single character.
+
+Examples: `0.5`, `-6.25`
+- string: This stores an immutable sequence of characters, stored in memory as a `const char*`. Notated with the string surrounded by the `"` symbol.
+
+Example: `"Hello, world!"`
+- char: This stores a single character. Notated with the character surrounded by the `'` symbol.
+
+Example: `'a'`, `' '` (space)
 - list: This stores an array of variables.
+
+Example: `[2, -4, -1.5, "Hi!"]`
+
+## Argument Types
+
+Ground has _ different argument types, which are each used for different arguments in various commands.
+
+- value (`$`): This gets the value of a variable.
+
+Example: `println $var`
+
+- direct (`&`): This gets the variable itself.
+
+Example: `set &var 10`
+
+- line (`%`): This is used to mark a label or line number
+
+Example: `jump %label`
+
+- function (`!`): This is used to mark a direct reference to a function
+
+Example: `call !myFunction &output`
+
+- type (`-`): This is used to mark a variable type
+
+Example: `fun !myFunction -int` (returns an int)