Editing

Primarily editing files is done by simply using the keyboard to change the contents, inserting and deleting text as needed. However, Notepad++ has many tools and aids to assist in editing files, mainly to automate repetitive tasks or speed up development.
Notepad++ is based on the Scintilla edit control and relies on it to perform many editing tasks and as such a lot if it is done by the Scintilla control itself, however supplemented if useful.