diff --git a/README.md b/README.md
index 7e0a5cd..d396402 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,7 @@ Tikz diagrams
 
 ## pdflatex
 
-* install dependencies:
-  * `sudo apt-get install texlive-latex-extra`
+* install dependencies (apt installable)
   * `texlive`
   * `texlive-latex-extra`
   * `pdf2svg`
@@ -37,3 +36,4 @@ Tikz diagrams
   * [tikz.dev](https://tikz.dev/tutorials-guidelines)
   * [tikz.netlify.app](https://tikz.netlify.app/)
   * [relative `positioning` library](https://rmwu.github.io/tutorial/latex/2019/11/21/positioning/#relative-positioning)
+  * [svg backgrounds](https://www.svgbackgrounds.com/)
diff --git a/diagram.tex b/diagram.tex
deleted file mode 100644
index 2938d53..0000000
--- a/diagram.tex
+++ /dev/null
@@ -1,88 +0,0 @@
-\documentclass[
-  crop,tikz,convert={
-    outext=.svg,
-    command=\unexpanded{
-      pdf2svg \infile\space\outfile
-    }
-  },
-  multi=false]
-{standalone}[2012/04/13]
-
-% \usepackage{tikz}
-%\usetikzlibrary{...}% tikz package already loaded by 'tikz' option above
-\usetikzlibrary{positioning}
-
-\makeatletter
-
-\begin{document}
-
-  \begin{tikzpicture}[
-      rounded corners=2pt,
-      inner sep=5pt,
-      line width=.6pt,
-      node distance=.8cm]
-
-    % background grid & fill
-    % \fill[white] (0,0) rectangle (15,8);
-    \fill[black!40!white] (-9,-9) rectangle (9,9);
-    \draw[step=1cm,gray,very thin] (-9,-9) grid (9,9);
-
-    \node (0) {mixer};
-    \node[right=of 0] {right};
-    \node[below right=of 0] {below right};
-    \node[below=of 0] {below};
-    \node[below left=of 0] {below left};
-    \node[left=of 0] {left};
-    \node[above left=of 0] {above left};
-    \node[above=of 0] {above};
-    \node[above right=of 0] {above right};
-
-    % sources y=7
-    \node (jack) at (0) [draw] {mini-jack};
-    % \node (microphone) at (3.5,7) [draw] {microphone};
-    % \node (soundcard) at (6,7) [draw] {DJ Soundcard};
-
-    % mixer y=5
-    % \node (mixer) at (3.5,5) [draw] {mixer};
-    % \node (mixer) {origin} [draw] {mixer};
-    % \node (headphones) at (6,5) [draw] {headphones};
-
-    % % amps y=3
-    % \node (subamp) at (2,3) [draw] {sub amp};
-    % % \node (topamp) at (5,3) [draw] {top amp};
-
-    % % speakers y=1
-    % \node [draw] (subl) at (1,1) {sub-L};
-    % \node [draw] (subr) at (3,1) {sub-R};
-    % \node [draw] (topl) at (5,1) {top-L};
-    % \node [draw] (topr) at (7,1) {top-R};
-
-    % % wiring (sources - mixer)
-    % \draw (jack.south) -- (mixer.north) node[midway,above] {$C_1$};
-    % \draw (microphone.south) -- (mixer.north) node[midway,above] {$C_2$};
-    % \draw (soundcard.south) -- (mixer.north) node[midway,above] {$C_3$};
-    % \draw (soundcard.south) -- (headphones.north) node[midway,above] {$C_4$};
-
-    % % wiring (amps - speakers)
-    % \draw (mixer.south) -- (topl.north) node[midway,above] {$C_5$};
-    % \draw (mixer.south) -- (topr.north) node[midway,above] {$C_5$};
-    % \draw (mixer.south) -- (subamp.north) node[midway,above] {$C_6$};
-
-    % % wiring (amps - speakers)
-    % \draw (subamp.south) -- (subl.north) node[midway,above] {$C_7$};
-    % \draw (subamp.south) -- (subr.north) node[midway,above] {$C_7$};
-
-    % % cable legend
-    % \node (legend) at (11,4) [draw, text width=6cm] {
-    %   \textbf{Cables} (top to bottom)\\
-    %   $C_1$ - stereo-mini-jack - 2xRCA\\
-    %   $C_2$ - mhicrophone - mono jack\\
-    %   $C_3$ - 2xRCA - 2xRCA\\
-    %   $C_4$ - stereo-jack - headphones\\
-    %   $C_5$ - speakON - speakON\\
-    %   $C_6$ - mono jack - mono jack\\
-    %   $C_7$ - speakON - XLR\\
-    % };
-
-  \end{tikzpicture}
-\end{document}
diff --git a/makefile b/makefile
index 66d62f0..1ff7b39 100644
--- a/makefile
+++ b/makefile
@@ -6,5 +6,4 @@ clean:
 
 svg:
 	pdflatex -shell-escape diagram.tex
-	firefox diagram.html
-	# explorer.exe diagram.html
+	explorer.exe diagram.html