google-fonts/apache/robotomono/DESCRIPTION.en_us.html

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Roboto Mono is a monospaced addition to the <a href="https://www.google.com/fonts/specimen/Roboto">Roboto</a> type family. 
Like the other members of the Roboto family, the fonts are optimized for readability on screens across a wide variety of devices and reading environments. 
While the monospaced version is related to its variable width cousin, it doesn&#8217;t hesitate to change forms to better fit the constraints of a monospaced environment. 
For example, narrow glyphs like &#8216;I&#8217;, &#8216;l&#8217; and &#8216;i&#8217; have added serifs for more even texture while wider glyphs are adjusted for weight. 
Curved caps like &#8216;C&#8217; and &#8216;O&#8217; take on the straighter sides from Roboto Condensed.
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<p>
Special consideration is given to glyphs important for reading and writing software source code. 
Letters with similar shapes are easy to tell apart. 
Digit &#8216;1&#8217;, lowercase &#8216;l&#8217; and capital &#8216;I&#8217; are easily differentiated as are zero and the letter &#8216;O&#8217;. 
Punctuation important for code has also been considered. 
For example, the curly braces &#8216;{&nbsp;}&#8217; have exaggerated points to clearly differentiate them from parenthesis &#8216;(&nbsp;)&#8217; and braces &#8216;[&nbsp;]&#8217;. 
Periods and commas are also exaggerated to identify them more quickly. 
The scale and weight of symbols commonly used as operators have also been optimized.
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