Features:

1)    Syntax coloring
2)    Code completion
3)    Quick Info / Parameter info / Commands syntax and usage info
4)    Comment / Uncomment selection
5)    Increase / Decrease indent
6)    Export to stream Palm DB (which can be read from Plua)
7)    Small GUI for the Windows Plua Compiler (pluac.exe)
8)    Integrated editors for Member lists / Commands so you can add your own code completion lists.
9)    Go to Line number
10)  Go to Function definition
11)  User can save often used code sequences to the "Dictionary" and insert them easily when needed.
12)  Navigator - to find and insert needed code sequences / language elements / user variables and functions.
13) The used Code Max 4.0 Source Editing ActiveX control comes with a lot of features.
Here you can find some of them:

Color Syntax Highlighting.   Language-specific keywords, comments, and strings are colored differently to set them apart from plain text.  Bold, italics, and underline are supported per keyword set.

Keystroke Macros.  Users can record a series of keystrokes and assign a keystroke to play back the keystrokes repeatedly.  Up to 10 macros may be recorded.

Multiple Split Views.  Users can create up to four separate views of the same edit buffer.  Each view can be scrolled independently.

Unlimited Undo/Redo.  All edit actions are fully undoable and redoable.  A limit can be set on the number of undoable actions.

Auto Indentation.  CodeMax automatically indents lines to following the scoping rules of the active language.

Drag and Drop Text Manipulation.  Highlighted text can be dragged and dropped between any window supporting OLE text Drag and Drop.  Text may be copied or moved.

Clipboard Support.  Text can be cut, copied and pasted onto the clipboard using the right-click menu or a keystroke.

RTF Clipboard support.  Text copied or dragged from the edit buffer can be pasted into other applications with all formatting information intact.

Custom Color Settings.  All foreground and background colors used in a CodeMax control are configurable by the end-user or developer.

Built-In Window Properties Dialog.  Most properties, including keyboard assignments, colors, current language, and tab settings are available to the user in a tabbed dialog available from the built-in right-click menu or a keystroke (Alt+Enter).  This dialog can be easily disabled and/or overridden by the parent window.

Built-In Right Click Menu.  A set of commonly used commands are available from a default right-click menu.  The right-click menu can be easily disabled and/or overriden by the parent window.

Microsoft IntelliMouse Support.  Scrolling, word selection, and line selection is easily accomplished with the Microsoft IntelliMouse.

Microsoft Windows XP Theming Support.  All elements of the CodeMax user interface automatically adapt to the current Windows theme when running on Windows XP.

Over 150 Separate Edit Commands.  More than 150 separate edit commands can be assigned to a keystroke and invoked by the user.  Support for custom commands is also included.

Line Numbering.  Lines can be numbered using any radix and the first line may start with any positive number.

Keyword Case Normalization.  Keywords can be converted to the proper case once a line is entered.

Horizontal Line Dividers.  Each line may have a line underneath it to separate functions or other groupings of text.

Code Completion .  Display memberlist popup windows, parameter info tooltips, QuickInfo tooltips, and auto-complete partially typed identifiers.

Automatic Brace Match Highlighting  Matching braces and scope keywords are highlighted as users type.

Automatic Font Resizing.  Users can change the font size simply by holding the control key down and spinning the mousewheel (Ctrl + MouseWheel).

THE OLD (SINGLE DOCUMENT INTERFACE) VERSION IS STILL AVAILABLE: streamED SDI