+.B mungegenre
+mungegenre () is a shell function used to modify the $GENRE variable. As
+a default action, it takes $GENRE as $1 and outputs the resulting value
+to stdout converting all UPPERCASE characters to lowercase.
+.TP
+.B pre_read
+pre_read () is a shell function which is executed before the CDROM is read
+for the first time, during abcde execution. It can be used to close the CDROM
+tray, to set its speed (via "setcd" or via "eject", if available) and other
+preparation actions. The default function is empty.
+.TP