Highlighting styles can be completely customized by the end user for each code language, even allowing the changing of text area background and line number margin colors. SyntaxEditor has all the advanced editing capabilities you'd expect to find in a premium code editor, such as multiple undo/redo, block indent/outdent, line numbers, visible whitespace, word wrap, line modification marks, split views, block (rectangular) selection, customizable drag/drop, macro recording and playback, input method editor (IME) support, and more. Over 100 edit actions are included with SyntaxEditor that cover everything from basic caret movement and selection to features such as tabification, character/word/line transposition.