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diff --git a/man/man3/TPMLIB_SetBufferSize.pod b/man/man3/TPMLIB_SetBufferSize.pod
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+++ b/man/man3/TPMLIB_SetBufferSize.pod
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+=head1 NAME
+
+TPMLIB_SetBufferSize  - Set the TPM's I/O buffer size
+
+=head1 LIBRARY
+
+TPM library (libtpms, -ltpms)
+
+=head1 SYNOPSIS
+
+B<#include <libtpms/tpm_library.h>>
+
+B<uint32_t TPMLIB_SetBufferSize(uint32_t, uint32_t *, uint32_t *);>
+
+=head1 DESCRIPTION
+
+The B<TPMLIB_SetBufferSize()> function sets the size of the buffer
+the TPM can use for input and output and that it advertises to users.
+It also allows to get the minimum and maximum supported buffer
+size.
+
+If 0 is given on input, the currently used buffer size is returned.
+Any other number will try to change the buffer size. The returned
+size may be smaller than the requested one, if the requested one was
+above a maximum. The returned size may be larger than the requested
+one, if the requested one was below a minimum.
+
+This function must be called after B<TPMLIB_ChooseTPMVersion()> has
+been called. It should not be called after B<TPMLIB_MainInit()> has
+been called but can again be called once B<TPMLIB_Terminate()> has
+been called.
+
+=head1 SEE ALSO
+
+B<TPMLIB_ChooseTPMVersion>(3), B<TPMLIB_MainInit>(3), B<TPMLIB_Terminate>(3)
+
+=cut