usedefaults no yes yes Specifies that the default value defined on a column is to be imported or loaded if the input data file contains no value for that column. Given import data file tabdata.del
usedefaults noyes yes指定如果输入数据文件没有包含某列的值，就导入或载入该列上所定义的默认值。
By default, the end-of-file string is an underscore (_); if that character is sent as a single input argument, everything after it is ignored.
缺省情况下，文件结束字符串是下划线(_)；如果将该字符作为单个输入参数来发送，则它之后的所有内容将被忽略。
As discussed previously, if you don't give a command-line argument, the application will use the default feed sources input XML file (rss_feed_sources.xml).
我们在前面讲过，如果没有提供命令行参数，那么此应用程序将会使用默认的提要源输入xml文件(rss_feed_sources . xml)。
The assembler code is input to the assembler, which by default produces the grandfather of all object files, the a.out file.
汇编代码是汇编器的输入，在缺省情况下，汇编器将生成所有目标文件的祖先，即a.out文件。
Also, since by default the LogParser reads from standard input, you can pipe a log file from a running server to the LogParser to get output generated in real time.
同时，虽然LogParser默认从标准输入中读取数据，但是你也可以指定一个来自运行时服务器的日志文件，用LogParser实时输出。
To run either flow, place a copy of the relevant input file in the directory being read by the FileInput node (by default this is C:\FileExamples\FILEIN).
要运行任一个流，请将相关输入文件的副本放在由FileInput节点读取的目录中（缺省为C:\FileExamples\FILEIN）。
This is important in Python programs because file input and output are, by default, buffered; data isn't written as soon as you call a print statement but is instead written in chunks.
在Python程序中这很重要，因为在默认情况下，文件输入和输出是缓冲的；在调用print语句时，数据实际未被写入；相反，数据是成批写入的。
Filename: the name of the input file; the default is defs.txt.
filename：输入文件名；默认值为defs . txt。
Filename: the name of the input file; the default is defs.txt.
filename：输入文件名；默认值为defs . txt。
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