imagemagick at beaglebone black with Angstrom

ImageMagick seems to installed on my Beaglebone. But I am not able to use “display”, it complains about “delegate library support not built-in”:

rose@beaglebone1:/home/rose(6)$ display
Version: ImageMagick 6.7.5-6 2013-09-09 Q16
Copyright: Copyright © 1999-2012 ImageMagick Studio LLC

Usage: display [options …] file [ [options …] file …]

Image Settings:
-alpha option on, activate, off, deactivate, set, opaque, copy

1 press to map or unmap the Command widget
2 press and drag to magnify a region of an image
3 press to load an image from a visual image directory
display: delegate library support not built-in `’ (X11) @ error/display.c/DisplayImageCommand/1904.

Any idea, how to handle this?