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+====== Fixing Fast and Uncontrollable Menu Behaviour ======
+In case the menu seems to scoll uncontrollably or very sensitive then most likely vsync has been turned off. To fix this issue, navigate the menu ''Settings->Frame Throttle'' and set the ''Frame Time Counter'' to ''1.0x''.
+====== Assigning a Default Core to all ROMs within a Playlist ======
+Some reasons for collecting ROM sets for various different versions of the same libretro emulation core would be:
+  * emulation cores such as MAME have versions that match specific ROM sets; for example, latest FinalBurn Neo releases are entirely synchronized to particular ROM sets,
+  * netplay will only work in case both players have the same matching ROM and the same matching core
+For example, a MAME ROM collection might end up looking like a collection of folders containing ROMs meant to be ran by different libretro emulation cores:
+<code>
+/storage/external/MAME/0.37b/...
+/storage/external/MAME/2003+/...
+/storage/external/MAME/FBA 0.2.97.42
+</code>
+where each path contains the ROM set version that is supposed to work with a certain MAME core version.
+Unfortunately, when scanning ''/storage/external/MAME'' for ROMs, retroarch generates playlists where the ''core_name'' and ''core_path'' is set to DETECT. When a player selects the ROM and attempts to play it, retroarch might ask with which core retroarch should run the ROM with. A player might not know the best version of the core to run the ROM with such that the player would end up selecting an ad-hoc core.
+The following script traverses a previously generated playlist and attempts to set the "core_name" and "core_path" based on the names of folders containing ROM collections. A new playlist is then generated with each ROM mapped to the core corresponding to the ROM set version.
+<file bash coreMapper.sh>
+#!/bin/bash
+###########################################################################
+##  Copyright (C) Wizardry and Steamworks 2020 - License: GNU GPLv3      ##
+##  Please see: http://www.gnu.org/licenses/gpl.html for legal details,  ##
+##  rights of fair usage, the disclaimer and warranty conditions.        ##
+###########################################################################
+## The following is a short script meant to read a retroarch playlist    ##
+## and assign a default core for all ROMs previously scanned.            ##
+###########################################################################
+## The script works on the principle that certain roms within ROM sets   ##
+## (ie: Goodset, No-Intro or MAME ROMs) work best with a specific core   ##
+## or core version and it is mostly impossible for retroarch to guess    ##
+## what core variant a certain ROM works with.                           ##
+##                                                                       ##
+## A playlist generated by retroarch may contain set the "core_path" and ##
+## "core_name" to "DETECT", indicating that the ROM will be ran with the ##
+## best-guess core that retroarch can find. Then, assuming, for example, ##
+## multiple MAME ROM sets stored on the drive in separate folders such   ##
+## as 2003+, 0.37b5 or FBA 0.2.97.42, this script can be used to set the ##
+## "core_path" parameter to the core matching the folder names.          ##
+###########################################################################
+## Requirements:                                                         ##
+##   * jq                                                                ##
+##   * Bourne Shell (pure POSIX will not work, ie: dash)                 ##
+## Example invocation:                                                   ##
+##    $ cat MAME.lpl | ./coreMapper.sh >> MAME_mapped.lpl                ##
+###########################################################################
+###########################################################################
+##                            CONFIGURATION                              ##
+###########################################################################
+# An array containing parts of paths in a retroarch playlist for which
+# cores should be assigned.
+PATH_MATCH=(
+    "2003+"
+    "FBA 0.2.97.42"
+    "0.37b5"
+)
+# A list of retroarch cores matching the path parts that must be set.
+ASSIGNED_CORE=(
+    "/tmp/cores/mame2003_plus_libretro.so"
+    "/tmp/cores/fbneo_libretro.so"
+    "/tmp/cores/mame2003_plus_libretro.so"
+)
+ASSIGNED_CORE_NAME=(
+    "MAME 2003-Plus"
+    "FinalBurn Neo"
+    "MAME 2000 (0.37b5)"
+)
+# Set the jq binary that should be used (default: jq-win64.exe for Windows)
+JQ="jq-win64.exe"
+###########################################################################
+##                              INTERNALS                                ##
+###########################################################################
+# Grab STDIN (pine input)
+INPUT="$(< /dev/stdin)"
+# Split indices using IFS (without other tools).
+OIFS=$IFS
+IFS=" "
+INDICES=${!PATH_MATCH[*]}
+IFS=$OIFS
+# Perform all core substitutions based on the matching path part.
+JSON=$INPUT
+for i in $INDICES; do
+    MATCH="${PATH_MATCH[$i]}"
+    CORE="${ASSIGNED_CORE[$i]}"
+    NAME="${ASSIGNED_CORE_NAME[$i]}"
+    # Variable overloading without storing intermediary partial results.
+    IFS="{}"
+    read -d '' JSON <<< $(printf '%s' "$JSON" | \
+        $JQ "
+            walk(
+                if type == \"object\" and (.path | type == \"string\" and contains (\""$MATCH"\"))
+                then
+                    (.core_path |= \""$CORE\"" | .core_name |= \""$NAME\"")
+                else
+                    .
+                end
+            )")
+    IFS=$OIFS
+done
+# Pretty print JSON result.
+echo $JSON | $JQ .
+</file>
+In order to use the script, edit the variables under the ''CONFIGURATION'' header within the script, retrieve a retroarch generated playlist from ''~/playlist'' (ie: ''MAME.lpl'') and pass the playlist through the script, ie:
+<code bash>
+cat MAME.lpl | ./coreMapper.sh
+</code>