The main window with some different settings.
Options and addons
Both are available from the environment menu.
Many options can be set per highlighter (file type), but you can always set a default option.
Handle themes, dictionaries, highlighters and program languages.
The editor has a huge arsenal to choose from. You can use incremental search, find/replace, find all/replace all with options to highlight all finds or list them in the bottom bar. You can also display a preview window before a replace all action.
Incremental search (Ctrl+E).
List all found items on Find All.