[Practical.Vim(2012.9)].Drew.Neil.Tip28 學習摘要

If we press the : key now, the command-line prompt will be prepopulated with the range :’<,’>. It looks cryptic, but you can think of it simply as a range standing for the visual selection. Then we can specify our Ex command, and it will execute on every selected line:
如果這時我們輸入: ，命令提示會彈出范圍 :’<,’> 。這個看起來很奇怪，但是你可以把這個當作一個visual selection的選擇范圍。然後我們可以輸入Ex命令，然後就會在每一行上執行。

The ‘< symbol is a mark standing for the first line of the visual selection, while ‘> stands for the last line of the visual selection.
‘<表示visual selection的第一行，’>表示visual selection的最後一行。

Specify a Range of Lines by Patterns
Vim also accepts a pattern as an address for an Ex command, such as the one shown here:
Vim在Ex命令中還可以把pattern作為address,例如下面

the range begins on the line containing an opening

Modify an Address Using an Offset
Suppose that we wanted to run an Ex command on every line inside the

:{address}+n

If n is omitted, it defaults to 1. The {address} could be a line number, a mark, or a pattern.
如果沒有n，默認值為1. address可以為行數，mark，或pattern.

Suppose that we wanted to execute a command on a particular number of lines, starting with the current line. We could use an offset relative to the current line:
假設我們打算在特定的行上執行命令，從當前行開始，我們可以利用offset這樣做。

:.,.+3p

The . symbol stands for the current line, so :.,.+3 is equivalent to :2,5 in this case.
. 表示當前行，所以 :.,.+3 在這個例子中表示:2,5

Line 0 doesn ’t really exist, but it can be useful as an address in certain contexts. In particular, it can be used as the final argument in the :copy {address} and :move {address} commands when we want to copy or move a range of lines to the top of a file
0行並不存在，不過在特定上下文中非常有用。特別是當我們項復制或移動一段代碼到文件的頭部的時候，它可以作為:copy {address} 和:move {address} 命令的最終參數。