There are two output styles: diff and sdiff.

有两种输出的形式：diff和sdiff。

So you take two documents and diff them.

所以可以拿两个文档并用diff程序来比较它们。

Gdb indicates that "no1" equals 8 and "diff" equals 0.

gdb指出“ no1 ”等于8，“ diff ”等于0。

In both diff and sdiff styles, the tabs are stripped.

在diff和sdiff形式中，选项会脱离掉。

The patch itself is in the same diff format that CVS uses.

修补程序本身采用的格式与 CVS 所使用的 diff 格式相同。