Variable: sgml-basic-offset
sgml-basic-offset is a customizable variable defined in
sgml-mode.el.gz.
Value
2
Documentation
Specifies the basic indentation level for sgml-indent-line.
Probably introduced at or before Emacs version 27.1.
Source Code
;; Defined in /usr/src/emacs/lisp/textmodes/sgml-mode.el.gz
(defcustom sgml-basic-offset 2
"Specifies the basic indentation level for `sgml-indent-line'."
:type 'integer
:safe #'integerp)