Graphics primitives

The graphical primitives are still under heavy development and will be documented later.

<postscript|url|width|height|clip-left|clip-bottom|clip-right|clip-top>

Please document.

<superpose|content-1||content-n>

Please document.

<graphics|gr-content-1||gr-content-n>

Please document.

<text-at|content|pos|hor-align|ver-align>

Please document.

<point|coord-1||coord-n>

Please document.

<line|point-1||point-n>

Please document.

<cline|point-1||point-n>

Please document.

<spline|point-1||point-n>

Please document.

<spline*|point-1||point-n>

Please document.

<cspline|point-1||point-n>

Please document.

<fill|unspecified>

Please document.

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