DisplayWidth calculates what the rendered width of string s will be.

Indent returns a copy of the string s with indent prefixed to it, will apply indent to each line of the string.

Pluralize returns a concatenated string with num and the plural form of thing if necessary.

RelativeTimeAgo returns a human readable string of the time duration between a and b that is estimated to the nearest unit of time.

Truncate returns a copy of the string s that has been shortened to fit the maximum display width.