The syntax coloring feature is customizable by syntax definition files (*.syn). These files are located in the "Syntax" sub folder of the SuperEdi program directory. The file format has been adopted from the popular TextPad editor. Therefore you will be able to re-use existing syntax definitions for many languages. However, if no syntax definition exists for your language, you can create your own definition file. Here are the instructions take from the TextPad manual.
SuperEdi can extract a list of functions or methods from your source code files and display them in the "Functions" toolbar. The functions are recognized by regular expressions specified in the "FunctionList" section of the syntax definition file. For example:
; Perl functions and packages [FunctionList] Function = ^\s*sub\s+{\w+} Class = ^\s*package\s+{[:_A-Za-z0-9]+}
The following keywords can be used. The keyword determines the icon that is displayed in the function list:
Function
Method
Attribute
Property
Class
Object
Interface
Book
Topic
Paragraph
Section
Block
Tag
Item
Folder
Page
The value is a regular expression that is matched against every line of the document. The part of the expression inside the curly brackets is the name that appears in the function list.