WIP Ion section

src/SUMMARY.md

@@ -81,11 +81,6 @@
         - [Extras]()
             - [OrbTK]()
             - [Orbutils]()
-    - [Ion]()
-        - [What Ion is]()
-        - [The design of Ion]()
-        - [The syntax]()
-        - [How it differs from Bash]()
     - [Oxide]()
         - [Decentral]()
         - [Cryptography]()
@@ -108,6 +103,11 @@
     - [Porting a program]()
         - [Remove dependencies]()
         - [Cross-compiling]()
+    - [Ion](./userspace/ion/ion.md)
+        - [What Ion is](./userspace/ion/what_ion_is.md)
+        - [The design of Ion]()
+        - [The syntax](./userspace/ion/the_syntax.md)
+        - [How it differs from Bash]()
 
 -------------------------------------------------------------------------------
 

src/userspace/ion/ion.md

+# Ion shell
+
+Ion is the underlying library for shells and command execution in Redox, as well as the default shell.

src/userspace/ion/the_syntax.md

+# Syntax
+
+How to describe it, formally or using examples?
+
+```
+if a == a
+  echo true a == a
+  if b != b
+    echo true b != b
+  else
+    echo false b != b
+    if 3 > 2
+      echo "true 3 > 2"
+    else
+      echo "false 3 > 2"
+    end
+  end
+else
+  echo false a == a
+end
+```

src/userspace/ion/what_ion_is.md

+# What Ion is?
+
+## Default shell in Redox
+
+### What shell is?
+A shell is a layer around operating system kernel a libraries, that allows users to interact with operating system. Shells can either be graphical (GUI) or command-line (CLI). 
+
+### Text shells
+
+Repl, fancy features
+
+### Relation to terminals
+
+<!---
+Sources:
+https://en.wikipedia.org/wiki/Shell_(computing)
+http://unix.stackexchange.com/questions/4126/what-is-the-exact-difference-between-a-terminal-a-shell-a-tty-and-a-con
+-->