# Input File Description ## Program: pw_export.x / PWscf / Quantum Espresso (version: svn)
> > ### TABLE OF CONTENTS INTRODUCTION &INPUTPP prefix | outdir | pseudo_dir | psfile | single_file | ascii | pp_file | uspp_spsi ### INTRODUCTION
> >     Purpose of pw_export.x:
> >        Writes PWSCF data for postprocessing purposes in XML format using IOTK lib.
> >        Wave-functions are collected and written using IO_BASE module.

> >     Structure of the input data:
> >     ============================

> >        &INPUTPP
> >          ...
> >        /
## Namelist: &INPUTPP
prefix | STRING
Status: | MANDATORY
>     the first part of the name of all the file written by the code
>     should be equal to the value given in the main calculations.
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outdir | STRING
Default: | "./"
>     the scratch directory where the massive data-files are written
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pseudo_dir | STRING
Default: | "./"
>     directory containing pseudopotential (PP) files
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psfile(i), i=1,ntyp | STRING
Default: | (empty string)
>     files containing i-th pseudopotential, where i=1, ntyp.
>     PP numbering must follow the ordering defined in the input of pw.x
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single_file | LOGICAL
Default: | .FALSE.
>     if .TRUE. one-file output is produced
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ascii | LOGICAL
Default: | .FALSE.
>     if .TRUE. output files are textual, otherwise they are partly binary.
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pp_file | STRING
Default: | "prefix.export/"
>     Output file.

>     If it is omitted, a directory "prefix.export/" is created
>     in outdir and some output files are put there. Anyway all the data
>     are accessible through the "prefix.export/index.xml" file which
>     contains implicit pointers to all the other files in the
>     export directory. If reading is done by the IOTK library
>     all data appear to be in index.xml even if physically it is not.
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uspp_spsi | LOGICAL
Default: | .FALSE.
>     when using USPP,  if set .TRUE. the code writes S | psi >
>     and | psi > vectors separately in the output file.
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This file has been created by helpdoc utility on Fri Jun 22 17:11:35 CEST 2018.