Definition of unit of electric current

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The ampere is defined as the constant current that, when maintained in two infinitely long, parallel conductors with negligible circular cross-sections placed one meter apart in a vacuum, generates a force of 2 × 10^(-7) Newton per meter of length between them. The mention of "orange colored text" refers to the consideration of the wires being infinitely thin, which is a crucial aspect of this definition.
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The ampere is that constant current which , if maintained in two straight parallel
conductors of infinite length, of negligible
circular cross-section, and placed 1 metre apart in vacuum, would produce between
these conductors a force equal to 2 × 10 ^{–7} Newton per metre of length.

What is meant by orange colored text??
 
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It means that one considers the limit that the wires are infinitely thin.
 

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