--text follows this line-- Apologies I left this out last night, in the Introduction to Programming in Emacs Lisp .On the Preface section , title a note to a novice. The indent-region key chord is switch. ie, second paragraph, last sentence But usually ‘M-C-\’ means press the key along with the key that is labeled and, at the same time, press the ‘\’ key. In GNU Emacs 31.0.50 (build 1, aarch64-unknown-linux-android21) of 2025-04-29 built on xeon Repository revision: 825ea052ad5638c056037c4cac92c9e666dc3820 Windowing system distributor 'Xiaomi', version 34.0.0 System Description: Redmi/sunstone_global/sunstone:14/UKQ1.240624.001/OS2.0.1.0.UMQMIXM:user/release-keys Configured using: 'configure --with-png=yes --with-webp=yes --with-gif=yes --with-jpeg=yes --with-xml2=yes --with-sqlite3=yes --with-gnutls=yes --with-tiff=yes --with-selinux=yes --with-modules=yes --with-tree-sitter=yes --with-imagemagick=no --with-lcms2=yes --with-mailutils= --with-pop=no-by-default --with-harfbuzz=yes --with-threads=yes --with-rsvg=yes --enable-check-lisp-object-type= --cache-file=config_cache.1 'CFLAGS=-O2 -Werror=implicit-function-declaration'' Configured features: GIF GLIB GMP GNUTLS HARFBUZZ JPEG LIBSELINUX LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SQLITE3 THREADS TIFF TREE_SITTER WEBP ZLIB Important settings: value of $LANG: en_GB.UTF8 locale-coding-system: utf-8-unix Major mode: Info Minor modes in effect: text-scale-mode: t tooltip-mode: t global-eldoc-mode: t eldoc-mode: t show-paren-mode: t electric-indent-mode: t mouse-wheel-mode: t modifier-bar-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t isearch-fold-quotes-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t minibuffer-regexp-mode: t buffer-read-only: t column-number-mode: t line-number-mode: t indent-tabs-mode: t transient-mark-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t Load-path shadows: ~/Documents/packages/rainbow/rainbow-delimiters hides /data/data/org.gnu.emacs/files/.emacs.d/elpa/rainbow-delimiters-2.1.5/rainbow-delimiters Features: (shadow sort mail-extr emacsbug lisp-mnt message yank-media puny dired dired-loaddefs rfc822 mml mml-sec epa derived epg rfc6068 epg-config gnus-util text-property-search mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils ielm pp comint ansi-osc ansi-color ring time-date face-remap mule-util info display-line-numbers init finder-inf rainbow-delimiters easy-mmode rainbow-delimiters-autoloads package browse-url xdg url url-proxy url-privacy url-expand url-methods url-history url-cookie generate-lisp-file url-domsuf url-util mailcap url-handlers url-parse auth-source cl-seq eieio eieio-core cl-macs icons password-cache json subr-x map byte-opt gv bytecomp byte-compile url-vars cl-loaddefs cl-lib rmc iso-transl tooltip cus-start cconv eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel android-win term/common-win touch-screen ls-lisp tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic indonesian philippine cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese composite emoji-zwj charscript charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp files window text-properties overlay sha1 md5 base64 format env code-pages mule custom widget keymap hashtable-print-readable backquote threads inotify dynamic-setting android multi-tty move-toolbar make-network-process tty-child-frames emacs) Memory information: ((conses 16 91739 31408) (symbols 48 8917 0) (strings 32 26279 2396) (string-bytes 1 630854) (vectors 16 17174) (vector-slots 8 170849 11188) (floats 8 39 56) (intervals 56 2438 0) (buffers 992 16)) Sent from Gmail