They add the digital equivalent of smiley face stickers and gold stars: sound effects, animations, points.
To varying degrees they add new twists, details and settings to the original tale.
Worries about the eurozone, which have pressured gold recently, remain at the forefront, they add.
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They add that some demos have included people with a record of football violence.
He admitted his crimes after he was arrested in the northern city of Amiens, they add.
However, they add that appropriate training is needed to allay concerns about inaccurate recordings.
As well as providing an outdoor classroom, they add to local people's quality of life.
The dramatic growth of Texas's cities over the past decade, they add, has not exactly helped.
With different styles, and sometimes conflicting views, they add considerably to the pleasure of the show.
They add interest and penalties and require you to face the legal system all over again.
Anyway, they add, pilotage rates do not affect a shipowner's decision about using a port.
But how much more can they add than the cream of the crop at other good universities?
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The government should offer tax breaks to attract investors to build warehouses and other infrastructure, they add.
They add to the so-called "phablet" category, as manufacturers test how big customers are willing to go.
They add that success stories like State Street draw tenants away from other parts of the city.
"With so many individual investors in the market as well, they add greatly to the volatility, " he said.
To avoid vendor lock-in, there should be mechanisms for data exchange that encourage portability across platforms, they add.
They add up to only a tiny fraction of the price that has been paid for our freedom.
Besides, they add that there is a waiting list until August for those NHS patients wanting to register.
"On the other hand, the ability to measure breathing from a wireless network has privacy implications, " they add.
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" Your "third act, " they add, will be played by the real you, "not some fat, ridiculous impostor.
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Unlike the Oracle and Specialist, you add as much value to a Running Partner as they add to you.
Not only could they add and subtract up to 20, but many could recite Tang and Song dynasty poetry.
Together they add a valuable layer to the existing internet stack of technologies.
They know everything about a player before they add him to the line-up.
Operating as such, they add, is not just inefficient but also a dirty proposition that results in more pollution.
Each individual bank fee may seem small, but taken together they add up.
And they add that regulatory changes made in 2010 have proven enough to protect investors making more rules unnecessary.
They add: "We believe in the radical notion that information should be free".
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Besides, they add, most businesses in the city employ fewer than ten people.
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