feat: add authoring notes to README

README.md

@@ -1,3 +1,79 @@
 # Line and Surface
 
 Web presentation of the Line and Surface project.
+
+Live at https://sdbs.cz/las/.
+
+
+## Authoring
+
+**(Taken directly from [Digital Garage Anabasis](https://garage.sdbs.cz/tools.inkscape.las.authoring.md) - yet to be tidied up)**
+
+### links
+#### anchors
+- object ---> right click ---> create link
+- id without hashtag
+
+- anchor <---description <---#anchor_id <---rectangle
+
+#### hyperlink
+- object ---> right click ---> create link
+- href >>> url
+
+#### intro / start
+- square
+- object properties
+--> id `start`
+
+
+### movies
+- image file --> object properties
+- ---> description
+- `down / up /... / up left / right down /....`
+- new line
+- `motion_source/sutr1/files.lst`
+- ---> ! set button !
+- `down
+motion_source/sutr1/files.lst
+`
+
+
+#### linux list
+```sh
+ls *.png > files.lst
+```
+
+#### windows list
+The method is the same as for all versions of Windows, starting with Windows 3.1 (from 1985!):
+
+1.  Open File Explorer.
+2.  Navigate to the folder under scrutiny.
+3.  Press Ctrl+L
+4.  Type this command (or use copy/paste) and press Enter:  
+    cmd  /c  dir  /b  > "%temp%\\Dir.txt"  & notepad  "%temp%\\Dir.txt"
+	
+### sound
+- circle (ELLIPSE NONONO)
+- object properties ---> desription
+- sound_source/xxx.mp3
+- ---> ! set button !
+
+
+### Interaction manual
+double click - fullscreen
+click with middle button - grab
+spacebar - anchor //intro
+mouse pointer --> edge - edge scrolling [fullscreen must be on]
+
+
+### image optimizations
+
+#### png
+`parallel --lb --tag optipng -o 5 -i 1 ::: **/*.png`
+
+- `parallel` = process in [parallel](https://www.gnu.org/software/parallel/)
+- `-o 5` = ridiculously high optimization
+- `-i 1` = turn on [interlacing](https://blog.codinghorror.com/progressive-image-rendering/)
+
+#### jpeg
+`parallel --lb --tag jpegoptim --all-progressive --force ::: **/*.jpg`