diff --git a/.travis/config.sh b/.travis/config.sh
index 85040b2..c1262bb 100644
--- a/.travis/config.sh
+++ b/.travis/config.sh
@@ -33,10 +33,16 @@
 #       - RUN_BLACK_INCLUDE
 #       - RUN_BLACK_EXCLUDE
 #       - RUN_BLACK_DISABLED
+#       - RUN_BLACK_EXTRA_ARGS
 #
 #   * .travis/runflake8.sh:
 #
 #       - RUN_FLAKE8_DISABLED
+#       - RUN_FLAKE8_EXTRA_ARGS
+#
+#   * .travis/runsyspycmd.sh:
+#
+#       - function lsr_runsyspycmd_hook
 #
 #   * .travis/runpytest.sh:
 #
diff --git a/.travis/custom.sh b/.travis/custom.sh
index 91eabbe..9a1738b 100755
--- a/.travis/custom.sh
+++ b/.travis/custom.sh
@@ -1,17 +1,10 @@
 #!/bin/bash
 # SPDX-License-Identifier: MIT
 
-# This script is executed with two arguments passed to it:
-#
-#   $1 - path to environment python (python used inside virtual environment
-#        created by tox)
-#   $2 - path to system python (python 3.x installed on the system)
-
 set -e
 
 ME=$(basename $0)
 SCRIPTDIR=$(readlink -f $(dirname $0))
-TOPDIR=$(readlink -f ${SCRIPTDIR}/..)
 
 . ${SCRIPTDIR}/utils.sh
 . ${SCRIPTDIR}/config.sh