<Chapter Label = "Visualising semigroups and elements">
<Heading>
Visualising semigroups and elements
</Heading>
There are two operations <Ref Oper = "TikzString"/> and <Ref Oper = "DotString"/> in &SEMIGROUPS; for creating &LaTeX; and <C>dot</C> (also
known as GraphViz) format pictures of the Green's class structure of a
semigroup and for visualising certain types of elements of a semigroup. There
is also a function <Ref Func = "Splash" BookName = "Digraphs"/> for
automatically processing the output of <Ref Oper = "TikzString"/> and <Ref
Oper = "DotString"/> and opening the resulting pdf file.
In this section, we describe the operations in &SEMIGROUPS; for creating
pictures in <C>dot</C> format.
<P/>
The operations described in this section return strings, which
can be written to a file using the function <Ref Func = "FileString"
BookName = "GAPDoc"/> or viewed using <Ref Func = "Splash" BookName = "Digraphs"/>.
<Section>
<Heading>
<C>tex</C> output
</Heading>
In this section, we describe the operations in &SEMIGROUPS; for creating
&LaTeX; representations of &GAP; objects. For pictures of &GAP; objects
please see Section <Ref Sect="tikz pictures"/>.
In this section, we describe the operations in &SEMIGROUPS; for creating
pictures in <C>tikz</C> format.
<P/>
The functions described in this section return a string, which can be
written to a file using the function <Ref Func = "FileString"
BookName = "GAPDoc"/> or viewed using <Ref Func = "Splash" BookName = "Digraph"/>.
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