package manager: linked pyenv

wiki/drawio.md

@@ -0,0 +1,13 @@
+# draw.io
+
+[draw.io](https://ww.drawio.net) is a cross-platform graph drawing software application.
+
+## Setup
+
+draw.io can be used online in the browser on [their website](https://app.diagrams.net).
+Alternatively a desktop application exists.
+The setup files for [Windows](/wiki/windows.md), MacOS and [Linux](/wiki/linux.md) can be found in
+[the draw.io GitHub](https://github.com/jgraph/drawio-desktop/releases).
+For Linux-distributions there are usually also packages in the
+[corresponding package manager](/wiki/linux/package_manager.md) often called `drawio-desktop` or
+something similar

wiki/images.md

@@ -1,25 +1,27 @@
 # Images
 
 An image is a visual representation of something.
-In the computer context it is a file with an extension like `png`, `jpg`, `gif` among others.
+In the computer context it is a file with an extension like `png`, `jpg`, `gif` and `svg` for
+vector graphics but there are many more.
 This entry also features medicinal image and visual formats such as DICOM.
 
-## Clients
+## Viewer
 
 - [sxiv](https://github.com/xyb3rt/sxiv) is an image viewer for [Linux'](/wiki/linux.md)
   [X window system](/wiki/linux/x_window_system.md).
 - [Weasis](https://github.com/nroduit/Weasis) is a cross-platform DICOM viewer.
 
-## Editing
+## Editors
 
 Editing images can be done by various image manipulation software.
-A popular cross-platform program for this is [GIMP](https://www.gimp.org/).
 
-A second cross-platform software suite for displaying, creating and editing (raster) images is
+- [GIMP](https://www.gimp.org/) is a popular cross-platform program for editing pictures.
-[ImageMagick](/wiki/imagemagick.md).
+- [ImageMagick](/wiki/imagemagick.md) is another cross-platform software suite for creating and
-
+- editing (raster) images.
-Another part of image manipulation is the upscaling of low resolution images.
+- [upscayl](https://github.com/upscayl/upscayl) is an upscaler that can be used cross-platform.
-This can be done by the cross-platform program [upscayl](https://github.com/upscayl/upscayl).
+- [Inkscape](/wiki/inkscape.md) is a cross-platform vector graphic editor.
+- [draw.io](/wiki/drawio.md) is a cross-platform program and web application for creating and
+  editing diagrams.
 
 ### Getting Metadata
 

wiki/inkscape.md

@@ -0,0 +1,38 @@
+# Inkscape
+
+[Inkscape](https://inkscape.org/) is a cross-platform editor for vector graphics.
+
+## Setup
+
+On the [Inkscape website](https://inkscape.org/release/) setup files for
+[Windows](/wiki/windows.md), MacOS and [Linux](/wiki/linux.md) can be found.
+On most Linux distributions Inkscape can usually be installed with the corresponding 
+[package manager](/wiki/linux/package_manager.md).
+
+## Usage
+
+This section addresses various way to use Inkscape for specific tasks.
+
+### Convert Handwriting to Vector Graphic
+
+This section is based on a two source.
+One is a [YouTube video by vecteezy](https://www.youtube.com/watch?v=gW19K11ihIc) which explains the
+setting of the levels, aswell as the tracing of the bitmap.
+though an older version was used which is why some features may be found at another place in the
+menus.
+This was changed accordingly for the following guide.
+The other is a [YouTube video by Logos By Nick](https://www.youtube.com/watch?v=EFHLF1hcrjg) which
+explains the simplification process.
+
+To convert handwriting to a vector graphic an image of the writing should first be opened in
+Inkscape.
+First the levels of black and white can be changed by using `Extensions > Raster > Levels` and
+changing the values for white and black points.
+Afterwards the bitmap should be traced.
+For this select `Path > Trace Bitmap` and change the values in the Detection mode 
+`Brightness cutoff` until it matches your expectations.
+After this the image has been converted to a bitmap, but most of the times it is not smooth and has
+quite some errors.
+The removal can be done by hand by removing the points manually.
+This is useful to do for bigger errors.
+For smaller errors `Path > Simplify` can be used.

wiki/linux/package_manager.md

@@ -284,8 +284,8 @@ This section is based on a
 
 In this case the error stems from a missing package.
 Normally it can easily be fixed by installing that corresponding package.
-But please note that `pyenv` can hide packages if the global Python version is set to something
+But please note that [pyenv](/wiki/programming_languages/golang.md#setup) can hide packages if the
-other than `system`.
+global Python version is set to something other than `system`.
 This is especially the case on [Arch Linux-systems](/wiki/linux/arch-linux.md) because Python
 packages are also installed via [Pacman or Yay](#arch-linux-pacman-and-yay).
 In this case the global Version has to be changed to `system` or the package installed to the

wiki/video.md

@@ -69,6 +69,19 @@ This way you don't have to search for your discs all the time.
 - [HandBrake](handbrake.md) is an open-source and multi-platform program that can compress video
   files.
 
+For all of this a Blu-Ray or DVD drive is needed that are compatible with MakeMKV.
+DVD-drives usually work out of the box as expected with MakeMKV.
+Normal Blu-Ray drives are the same.
+However for UHD-Blu-Ray drives vendors use special firmwares to prohibit the extraction of video
+files from the discs using the drives.
+For example: if you use a "Verbatim 43888" as described in a
+[reddit comment by billycar11](https://www.reddit.com/r/makemkv/comments/1ize3vg/comment/mf2d5f4)
+the drive has to be flashed.
+This specific drive uses a BU40N (the drive can be found in the Drive Information under
+"Product").
+A guide on how to flash UHD drives (including the BU40N) can be found in the
+[MakeMKV forum post by billycar11](https://forum.makemkv.com/forum/viewtopic.php?f=16&t=19634).
+
 ## Naming schemes of movies and TV shows
 
 This section describes how to name and how to place movies and TV shows and