Just so there is a backup

pkgs/elisp/azos-emacs-editor.org

@@ -28,7 +28,7 @@ Binding to startup is 'C-c /'
 ** Graphviz
 
 #+begin_src emacs-lisp
-(use-package graphviz-dot)
+(use-package graphviz-dot-mode)
 #+end_src
 
 ** Markdown
@@ -86,20 +86,15 @@ Creating classes
 (defvar anerenv/latex-class-common-header
   "[DEFAULT-PACKAGES]
 \\usepackage{polyglossia}
-\\usepackage{tabularx}
 \\usepackage[cache=false]{minted}
 \\usepackage{xcolor}
-\\usepackage{indentfirst}
 \\usepackage{amsfonts}
 \\usepackage{transparent}
 \\usepackage{amsmath}
-\\usepackage{braket}
-\\usepackage{dsfont}
 \\definecolor{codebg}{rgb}{0.95,0.95,0.95}
 \\setdefaultlanguage{english}
 \\setlength{\\parindent}{0in}
 
-
 \\DeclareMathOperator*{\\argmax}{arg\\,max}
 \\DeclareMathOperator*{\\argmin}{arg\\,min}
 \\newfontfamily\\hebrewfont{LiberationSans}[Script=Hebrew]
@@ -174,8 +169,78 @@ Comments:
            (format-time-string "-%Y-%m-%d-%H%M%S") ".docx")))
 #+end_src
 
+** Latex previews
+
+We don't want to create ltximg directories all over the place.
+Let's store all ltximg previews in tmp directory.
+
+Latex scaling from
+
+https://karthinks.com/software/scaling-latex-previews-in-emacs/
+
+#+begin_src emacs-lisp
+(setq org-format-latex-header
+ "\\documentclass{article}
+\\usepackage[usenames]{color}
+[PACKAGES]
+[DEFAULT-PACKAGES]
+\\pagestyle{empty}             % do not remove
+% The settings below are copied from fullpage.sty
+\\setlength{\\textwidth}{\\paperwidth}
+\\addtolength{\\textwidth}{-3cm}
+\\setlength{\\oddsidemargin}{1.5cm}
+\\addtolength{\\oddsidemargin}{-2.54cm}
+\\setlength{\\evensidemargin}{\\oddsidemargin}
+\\setlength{\\textheight}{\\paperheight}
+\\addtolength{\\textheight}{-\\headheight}
+\\addtolength{\\textheight}{-\\headsep}
+\\addtolength{\\textheight}{-\\footskip}
+\\addtolength{\\textheight}{-3cm}
+\\setlength{\\topmargin}{1.5cm}
+\\addtolength{\\topmargin}{-2.54cm}
+\\DeclareMathOperator*{\\argmax}{arg\\,max}
+\\DeclareMathOperator*{\\argmin}{arg\\,min}"
+ )
+
+(setq org-preview-latex-image-directory (concat user-emacs-directory "ltximg/"))
+
+(setq org-latex-create-formula-image-program 'dvisvgm)
+
+(setq org-format-latex-options (plist-put org-format-latex-options :scale 1))
+#+end_src
+
+** Presentation
+
+#+begin_src emacs-lisp
+(use-package org-present
+  :config
+    (add-hook 'org-present-mode-hook (lambda ()
+            (evil-emacs-state)
+            (blink-cursor-mode 0)
+            (org-present-big)
+            (org-display-inline-images)
+            (org-present-read-only)
+            (setq-local global-hl-line-mode nil)
+            (org-present-hide-cursor)
+            (olivetti-mode 1)
+            (display-line-numbers-mode 0)))
+
+    (add-hook 'org-present-mode-quit-hook (lambda ()
+            (org-present-small)
+            (blink-cursor-mode 1)
+            (org-remove-inline-images)
+            (org-present-show-cursor)
+            (org-present-read-write)
+            (evil-normal-state)
+            (setq-local global-hl-line-mode 1)
+            (olivetti-mode 0)
+            (display-line-numbers-mode 1)))
+)
+#+end_src
+
 * Provide
 
 #+begin_src emacs-lisp
 (provide 'azos-emacs-editor)
+(add-hook 'after-init-hook (lambda () (require 'azos-emacs-editor)))
 #+end_src