Mike Fisher

Missing references about signals.py in 4.4.2

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## Greetings! ## Location within the Book * Chapter or Appendix: 4 * Section: 4 * Subsection: 2 ## Description signals.py item has undefined references "(see **??:??**)" ## Possible Solutions

Table 5.2 missing top horizontal line

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## Location within the Book * Chapter or Appendix: 5 * Section: 2 * Subsection: Table 5.2 ## Description The table doesn't have a top line (above the word "Environment")....