Multiple pages - the ten trades
The following skills all have a paragraph stating
<tradename> is one of the Trades. A trade is a skilled practice of a practical occupation. An individual with skill in one of the Trades is a skilled worker (as opposed to an unskilled worked). Electronics is one of ten Trades: Biologics, Electronics, Fluidics, Gravitics, Polymers, Magnetics, Mechanic, Photonics, and Programmer.
Page 121, Biologics
Page 124, Craftsman
Page 127, Electronics
Page 129, Fluidics
Page 131, Gravatics
Page 135, Magnetics
Page 135, Mechanic
Page 137, Photonics
Page 137, Polymers
Page 138, Programmer
On each of these pages, the word ten could be inserted prior to the word Trades in the first sentence. The third and final sentences could be replaced. A possible replacement might be similar to See "The Trades" sidebar on page 143.
For example, the updated skill paragraph might read
Biologics is one of the ten Trades. A trade is a skilled practice of a practical occupation. See "The Trades" sidebar on page 143.