Colemak is a keyboard layout for Latin-script alphabets, created by and named after Shai Coleman in 2006. The layout is designed to make typing more efficient and comfortable by placing the most frequent letters under the strongest fingers.
The Colemak layout was designed with the QWERTY layout as a base, changing the positions of 17 keys while retaining the QWERTY positions of most non-alphabetic characters and many popular keyboard shortcuts, supposedly making it easier to learn than Dvorak layout for people who already type in QWERTY without losing efficiency. It shares several design goals with the Dvorak layout, such as minimizing finger path distance and making heavy use of the home row. 74% of typing is done on the home row compared to 70% for Dvorak and 32% for QWERTY. The default Colemak layout lacks a Caps Lock key; an additional Backspace key occupies the position typically occupied by Caps Lock on modern keyboards.
Coleman states that he designed Colemak to be easy to learn, explaining that Dvorak is hard for QWERTY typists to learn due to it being so different from the QWERTY layout. The layout has attracted media attention as an alternative to Dvorak for improving typing speed and comfort with an alternate keyboard layout.
A series of intermediate layouts known as 'Tarmak' have been created with the intention of making it easier for new users to adopt the layout. The layouts change only 3-5 keys at a time in a series of 5 steps.
Colemak has been criticised for placing too much emphasis on the middle-row centre-column keys (D and H), leading to awkward lateral hand movements for certain common English bigrams such as HE. The Colemak user community developed a modified version of Colemak, called Colemak-DH, to address these concerns.
The Colemak community has created several other modifications and variants. Some of these are not directly related to Colemak but would work on other layouts as well.
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ergonomic, fast and easy to learn QWERTY/Dvorak alternative
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