如何在使用groff的unix手册页中添加空白行？

Question

我试过以下，它不工作：

.SH ADD A NEW TEST 
Everytime you invoke a command within the shell, 
this is what actually happens: the shell search for a folder 
named as your command inside the directory 
.B path/to/framework/Tests 
or any subfolder, 
if it finds such a folder, it will search for a file called 
main.pl and will launch it. 
.br 
.br 
Adding a new test is easy as create a new folder, put a main.pl 
file inside it and invoke the folder name. Of course, for a better 
integration with the whole system you should follow 
some guide lines. Invoke the command 
.B skeleton 
to find out where the skeleton file is installed in your 
system. Have a look to that file. It's well commented and 
cover all possibile case and scenarios. Use it as a model to write 
your own test. 

第二.br会被忽略。

Answer 1

我能够在段落开始时使用.PP来完成它。

.SH ADD A NEW TEST 
.PP 
Everytime you invoke a command within the shell, 
this is what actually happens: the shell search for a folder 
named as your command inside the directory 
.B path/to/framework/Tests 
or any subfolder, 
if it finds such a folder, it will search for a file called 
main.pl and will launch it. 
.PP 
Adding a new test is easy as create a new folder, put a main.pl 
file inside it and invoke the folder name. Of course, for a better 
integration with the whole system you should follow 
some guide lines. Invoke the command 
.B skeleton 
to find out where the skeleton file is installed in your 
system. Have a look to that file. It's well commented and 
cover all possibile case and scenarios. Use it as a model to write 
your own test.