Apart from Campbell, there is one 'Senior' wizard listed in the area and two more with no rank marked, but power ratings given on an unexplained scale. The Senior wizard comes with an address but no phone number, and their name is apparently Salix.
After the directory, the manual dives straight into the Speech: vocabulary, alphabet (all 418 common symbols), pronunciation (with a note that dialects vary widely between species and this version is human-specific), and grammar. This section only covers the basics, and very few words in the vocabulary list are explicitly defined; for anything that expresses a concept already found in English, even for some things that are only pretty close, the meaning is unobtrusively and naturally obvious.
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After the directory, the manual dives straight into the Speech: vocabulary, alphabet (all 418 common symbols), pronunciation (with a note that dialects vary widely between species and this version is human-specific), and grammar. This section only covers the basics, and very few words in the vocabulary list are explicitly defined; for anything that expresses a concept already found in English, even for some things that are only pretty close, the meaning is unobtrusively and naturally obvious.