presentation: added pdfpc and reformatted

wiki/game/steam.md

@@ -77,7 +77,7 @@ The data stored this way can be accessed on the
 Games can also be synchronized without the Steam Cloud by using [Syncthing](/wiki/syncthing.md) as
 described in [the games entry](/wiki/game.md#syncing-game-saves-across-systems).
 
-## Error Handling
+## Troubleshooting
 
 The following section addresses errors that can handle inside Steam or game
 errors that are specific to Steam.

wiki/linux/suckless.md

@@ -49,7 +49,7 @@ new `feature`
 
 This section addresses various errors that can happen when using suckless programs.
 
-### suckless program crashes or struggles with colored emojis
+### Suckless Program Crashes Or Struggles With Colored Emojis
 
 Suckless programs  especially `st` and `dmenu` can not display colored
 emojis.
@@ -58,3 +58,13 @@ libxft is the client side font rendering library to display anti-aliased text.
 To change this [libxft-bgra](https://github.com/uditkarode/libxft-bgra) needs
 to be installed.
 This is a patched version especially for running with the suckless programs.
+
+### Display Manager Problems with Full Screen Windows
+
+Using `dwm` or its [Wayland](/wiki/linux/wayland.md) counterpart `dwl` there may be some problems
+with full screen programs.
+Some of these programs (especially [Steam](/wiki/game/steam.md) [Games](/wiki/game.md)) might
+apparently freeze.
+However, this may be not the case as they may be only displaying a freeze frame.
+This can sometimes be fixed by navigating out of the window managers full screen, then making it a
+floating window and then setting it to be full screen again.

wiki/presentation.md

@@ -8,10 +8,19 @@ Presentation tools are often used to support the presentation.
 The following is a list of these tools.
 
 - PowerPoint is a tool often used for creation and presenting in [Windows](/wiki/windows.md).
-  It can be used on dual screen setup to give the presenter an additional slide for comments.
+    It can be used on dual screen setup to give the presenter an additional slide for comments.
 - PDF files can easily be used for presenting cross-platform but often used for
-  [Linux-based operating systems](/wiki/linux.md). 
-  They can easily be generated by [LaTeX](/wiki/markup_language.md#latex).
-- [pympress](https://github.com/Cimbali/pympress) is a cross-platform tool for the presentation via
-  PDF files.
-  It is also usable for dual screen setups.
+    [Linux-based operating systems](/wiki/linux.md).
+    They can easily be generated by [LaTeX](/wiki/markup_language.md#latex).
+- [pympress](https://github.com/Cimbali/pympress) is a cross-platform tool for giving presentations
+    using PDF files.
+    It is usable for dual screen setups and features basic notes and timer functions.
+- [pdfpc](https://pdfpc.github.io/) is a cross-platform tool for giving presentations using PDF
+    files.
+    It is usable for dual screen setups and features basic notes and timer functions.
+    In contrast to pympress it features more elaborate functions and abilities to include timer
+    and other options inside the PDF using the `pdfpc` LaTeX package.
+    However, it also works well with LaTeX's default `\note` function.
+    Basic guides for this can be found on the pages of
+    [toromtomtom](https://www.toromtomtom.com/blog/2021/10/17/pdfpc.html) and
+    [Utah university](https://ctan.math.utah.edu/ctan/tex-archive/macros/latex/contrib/pdfpc/pdfpc-doc.pdf).