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diff --git a/man/man3/TPMLIB_CancelCommand.pod b/man/man3/TPMLIB_CancelCommand.pod
new file mode 100644
index 0000000..b41efc2
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+++ b/man/man3/TPMLIB_CancelCommand.pod
@@ -0,0 +1,29 @@
+=head1 NAME
+
+TPMLIB_CancelCommand  - Cancel a TPM command
+
+=head1 LIBRARY
+
+TPM library (libtpms, -ltpms)
+
+=head1 SYNOPSIS
+
+B<#include <libtpms/tpm_library.h>>
+
+B<uint32_t TPMLIB_CancelCommand(void);>
+
+=head1 DESCRIPTION
+
+The B<TPMLIB_CancelCommand()> function indicates that the ongoing processing
+of a TPM command is to be cancelled. The cancellation will only
+be effective for certain time consuming operations, such as the creation
+of keys.
+
+Note that an implementation that wants to support cancellation of commands
+needs to process TPM commands in one thread and cancel them in another.
+
+=head1 SEE ALSO
+
+B<TPMLIB_Process>(3)
+
+=cut