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I have used wijesekara layout with windows xp. at there i could use alt+num to type the keys that are not in the keyboard. but now in ubuntu wijesekara layout it seems that this doesn't work. how can i type speciall characters those have to be written in normally by pressing alt and entering a number?

marked as duplicate by muru, Eric Carvalho, Fabby, Community Mar 12 '15 at 10:38

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By using the numeric code point feature. Basicially replace Alt with Ctrl+Shift+U.

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