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[streambuf.put.area]
# 31 Input/output library [[input.output]](./#input.output)
## 31.6 Stream buffers [[stream.buffers]](stream.buffers#streambuf.put.area)
### 31.6.3 Class template basic_streambuf [[streambuf]](streambuf#put.area)
#### 31.6.3.4 Protected member functions [[streambuf.protected]](streambuf.protected#streambuf.put.area)
#### 31.6.3.4.3 Put area access [streambuf.put.area]
[🔗](#lib:pbase,basic_streambuf)
`char_type* pbase() const;
`
[1](#1)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iostreams.tex#L3528)
*Returns*: The beginning pointer for the output sequence[.](#1.sentence-1)
[🔗](#lib:pptr,basic_streambuf)
`char_type* pptr() const;
`
[2](#2)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iostreams.tex#L3539)
*Returns*: The next pointer for the output sequence[.](#2.sentence-1)
[🔗](#lib:epptr,basic_streambuf)
`char_type* epptr() const;
`
[3](#3)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iostreams.tex#L3550)
*Returns*: The end pointer for the output sequence[.](#3.sentence-1)
[🔗](#lib:pbump,basic_streambuf)
`void pbump(int n);
`
[4](#4)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iostreams.tex#L3561)
*Effects*: Adds n to the next pointer for the output sequence[.](#4.sentence-1)
[🔗](#lib:setp,basic_streambuf)
`void setp(char_type* pbeg, char_type* pend);
`
[5](#5)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iostreams.tex#L3572)
*Preconditions*: [pbeg, pend) is a valid range[.](#5.sentence-1)
[6](#6)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iostreams.tex#L3576)
*Postconditions*: pbeg == pbase(),pbeg == pptr(),
andpend == epptr() are all true[.](#6.sentence-1)