Posto l’errore:
`
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l.138
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l.201 \node (dot) [terminal]
{.};
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l.202 \node (digit) [terminal,base right=of dot]
{digit};
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g to ignore it. Perhaps you misspelled it.
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l.202 \node (digit) [terminal,base right=of dot]
{digit};
! Package pgfkeys Error: I do not know the key '/tikz/terminal' and I am going
to ignore it. Perhaps you misspelled it.
See the pgfkeys package documentation for explanation.
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l.203 \node (E) [terminal,base right=of digit]
{E};
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g to ignore it. Perhaps you misspelled it.
See the pgfkeys package documentation for explanation.
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l.203 \node (E) [terminal,base right=of digit]
{E};
[3] (s.aux)
LaTeX Warning: There were undefined references.
)
(\end occurred inside a group at level 1)
### simple group (level 1) entered at line 114 ({)
### bottom level
(see the transcript file for additional information)`