Is there function for displaying text in R window?

Is there function for displa开发者_开发知识库ying text in R window ? and how to display text written with HTML formating ?

See https://www.rdocumentation.org/packages/gplots/topics/textplot

As for HTML, I'm not sure how that makes sense--is your R window a web browser?

Maybe file.show?

Display one or more (plain) text files, in a platform specific way, typically via a ‘pager’ (help(file.show)).

It isn't clear what you mean by "R window" but print will print text:

print("Hello World")

or

x <- "Hello World"
print(x)

gives

[1] Hello World

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