Graphics

One of the goals of SPECTRA is to ensure that the graphical output is identical on every supported platform. As a consequence it uses own the graphics drivers. These are some of the features:

• The recommended drivers are X11 and Postscript. Special care has been taken to ensure that the Postscript output looks the same as the X11 output. In fact also TEK4014 and REGIS drivers are included, but these have very limited capabilities. It is not recommended to use them.
• Fonts are selected using the X11 syntax. So far SPECTRA offers fonts of 17 different families, those fonts that appear in X11 and in Postscript.
• The user may enter special text strings by using the Latex syntax: Umlaute (ä, ö, etc.), special characters, indices etc. SPECTRA supports only a subset of Latex commands. It can be extended, if it becomes necessary.

  The Latex syntax has been selected for describing texts because many users are already accustomed to it.

References

1

http://www.desy.de/hasylab/computing/computing_hasylab.html.

2

The HCLIB was coded by W. Drube, HASYLAB