slackbuilds/desktop/xvkbd/README

xvkbd is a virtual (graphical) keyboard program for X Window System
which provides facility to enter characters onto other clients
(softwares) by clicking on a keyboard displayed on the screen. This may
be used for systems without a hardware keyboard such as kiosk terminals
or handheld devices. This program also has facility to send characters
specified as the command line option to another client.