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diff --git a/SRC/slabrd.f b/SRC/slabrd.f
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@@ -66,59 +66,105 @@
*> The number of leading rows and columns of A to be reduced.
*> \endverbatim
*>
-*
-* Authors
-* =======
-*
-*> \author Univ. of Tennessee
-*> \author Univ. of California Berkeley
-*> \author Univ. of Colorado Denver
-*> \author NAG Ltd.
-*
-*> \date November 2011
-*
-*> \ingroup realOTHERauxiliary
-*
-*
-* Further Details
-* ===============
-*>\details \b Further \b Details
+*> \param[in,out] A
*> \verbatim
-* See Further Details.
+*> A is REAL array, dimension (LDA,N)
+*> On entry, the m by n general matrix to be reduced.
+*> On exit, the first NB rows and columns of the matrix are
+*> overwritten; the rest of the array is unchanged.
+*> If m >= n, elements on and below the diagonal in the first NB
+*> columns, with the array TAUQ, represent the orthogonal
+*> matrix Q as a product of elementary reflectors; and
+*> elements above the diagonal in the first NB rows, with the
+*> array TAUP, represent the orthogonal matrix P as a product
+*> of elementary reflectors.
+*> If m < n, elements below the diagonal in the first NB
+*> columns, with the array TAUQ, represent the orthogonal
+*> matrix Q as a product of elementary reflectors, and
+*> elements on and above the diagonal in the first NB rows,
+*> with the array TAUP, represent the orthogonal matrix P as
+*> a product of elementary reflectors.
+*> See Further Details.
+*> \endverbatim
*>
-*> LDA (input) INTEGER
+*> \param[in] LDA
+*> \verbatim
+*> LDA is INTEGER
*> The leading dimension of the array A. LDA >= max(1,M).
+*> \endverbatim
*>
-*> D (output) REAL array, dimension (NB)
+*> \param[out] D
+*> \verbatim
+*> D is REAL array, dimension (NB)
*> The diagonal elements of the first NB rows and columns of
*> the reduced matrix. D(i) = A(i,i).
+*> \endverbatim
*>
-*> E (output) REAL array, dimension (NB)
+*> \param[out] E
+*> \verbatim
+*> E is REAL array, dimension (NB)
*> The off-diagonal elements of the first NB rows and columns of
*> the reduced matrix.
+*> \endverbatim
*>
-*> TAUQ (output) REAL array dimension (NB)
+*> \param[out] TAUQ
+*> \verbatim
+*> TAUQ is REAL array dimension (NB)
*> The scalar factors of the elementary reflectors which
*> represent the orthogonal matrix Q. See Further Details.
+*> \endverbatim
*>
-*> TAUP (output) REAL array, dimension (NB)
+*> \param[out] TAUP
+*> \verbatim
+*> TAUP is REAL array, dimension (NB)
*> The scalar factors of the elementary reflectors which
*> represent the orthogonal matrix P. See Further Details.
+*> \endverbatim
*>
-*> X (output) REAL array, dimension (LDX,NB)
+*> \param[out] X
+*> \verbatim
+*> X is REAL array, dimension (LDX,NB)
*> The m-by-nb matrix X required to update the unreduced part
*> of A.
+*> \endverbatim
*>
-*> LDX (input) INTEGER
+*> \param[in] LDX
+*> \verbatim
+*> LDX is INTEGER
*> The leading dimension of the array X. LDX >= max(1,M).
+*> \endverbatim
*>
-*> Y (output) REAL array, dimension (LDY,NB)
+*> \param[out] Y
+*> \verbatim
+*> Y is REAL array, dimension (LDY,NB)
*> The n-by-nb matrix Y required to update the unreduced part
*> of A.
+*> \endverbatim
*>
-*> LDY (input) INTEGER
+*> \param[in] LDY
+*> \verbatim
+*> LDY is INTEGER
*> The leading dimension of the array Y. LDY >= max(1,N).
+*> \endverbatim
*>
+*
+* Authors
+* =======
+*
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
+*
+*> \date November 2011
+*
+*> \ingroup realOTHERauxiliary
+*
+*
+* Further Details
+* ===============
+*>\details \b Further \b Details
+*> \verbatim
*>
*> The matrices Q and P are represented as products of elementary
*> reflectors: