The editor uses the Tab key to increase or decrease the indentation level. The indentation size can be changed in the Language Properties pane of the editor's Properties window, as can all the indent-related features listed below.

To change the indentation size:
  1. Set the Indent Size property for the required language.

The editor can optionally use tab characters to fill whitespace when indenting. The use of tabs for filling whitespace can be selected in the editor's Language settings.

To select tab or space fill when indenting:
  1. Set the Use Tabs property for the required language. Note: changing this setting does not add or remove existing tabs from files, the change will only affect new indents.

The editor can assist with source code indentation while inserting text. There are three levels of indentation assistance:

Changing indentation options:

To change the indentation mode:

  1. Set the Indent Mode property for the required language.

To change whether opening braces are indented in smart-indent mode:

  1. Set the Indent Opening Brace property for the required language.

To change whether closing braces are indented in smart-indent mode:

  1. Set the Indent Closing Brace property for the required language.

To change the number of previous lines used for context in smart-indent mode:

  1. Set the Indent Context Lines property for the required language.