Make ASN1 manuals conform with man-pages(7)

Details from man-pages(7) that are used:

    Formatting conventions for manual pages describing functions

        ...
        Variable names should, like argument names, be specified in italics.
        ...

    Formatting conventions (general)

        ...
        Special macros, which are usually in uppercase, are in bold.
        Exception: don't boldface NULL.
        ...

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10042)

1 files changed, 27 insertions, 26 deletions

diff --git a/doc/man3/ASN1_TYPE_get.pod b/doc/man3/ASN1_TYPE_get.pod
index 573fc990d8..9f175f7336 100644
--- a/doc/man3/ASN1_TYPE_get.pod
+++ b/doc/man3/ASN1_TYPE_get.pod
@@ -20,44 +20,45 @@ functions
 
 =head1 DESCRIPTION
 
-These functions allow an ASN1_TYPE structure to be manipulated. The
-ASN1_TYPE structure can contain any ASN.1 type or constructed type
+These functions allow an B<ASN1_TYPE> structure to be manipulated. The
+B<ASN1_TYPE> structure can contain any ASN.1 type or constructed type
 such as a SEQUENCE: it is effectively equivalent to the ASN.1 ANY type.
 
-ASN1_TYPE_get() returns the type of B<a>.
+ASN1_TYPE_get() returns the type of I<a>.
 
-ASN1_TYPE_set() sets the value of B<a> to B<type> and B<value>. This
-function uses the pointer B<value> internally so it must B<not> be freed
+ASN1_TYPE_set() sets the value of I<a> to I<type> and I<value>. This
+function uses the pointer I<value> internally so it must B<not> be freed
 up after the call.
 
-ASN1_TYPE_set1() sets the value of B<a> to B<type> a copy of B<value>.
+ASN1_TYPE_set1() sets the value of I<a> to I<type> a copy of I<value>.
 
-ASN1_TYPE_cmp() compares ASN.1 types B<a> and B<b> and returns 0 if
+ASN1_TYPE_cmp() compares ASN.1 types I<a> and I<b> and returns 0 if
 they are identical and non-zero otherwise.
 
 ASN1_TYPE_unpack_sequence() attempts to parse the SEQUENCE present in
-B<t> using the ASN.1 structure B<it>. If successful it returns a pointer
-to the ASN.1 structure corresponding to B<it> which must be freed by the
+I<t> using the ASN.1 structure I<it>. If successful it returns a pointer
+to the ASN.1 structure corresponding to I<it> which must be freed by the
 caller. If it fails it return NULL.
 
-ASN1_TYPE_pack_sequence() attempts to encode the ASN.1 structure B<s>
-corresponding to B<it> into an ASN1_TYPE. If successful the encoded
-ASN1_TYPE is returned. If B<t> and B<*t> are not NULL the encoded type
-is written to B<t> overwriting any existing data. If B<t> is not NULL
-but B<*t> is NULL the returned ASN1_TYPE is written to B<*t>.
+ASN1_TYPE_pack_sequence() attempts to encode the ASN.1 structure I<s>
+corresponding to I<it> into an B<ASN1_TYPE>. If successful the encoded
+B<ASN1_TYPE> is returned. If I<t> and I<*t> are not NULL the encoded type
+is written to I<t> overwriting any existing data. If I<t> is not NULL
+but I<*t> is NULL the returned B<ASN1_TYPE> is written to I<*t>.
 
 =head1 NOTES
 
-The type and meaning of the B<value> parameter for ASN1_TYPE_set() and
-ASN1_TYPE_set1() is determined by the B<type> parameter.
-If B<type> is V_ASN1_NULL B<value> is ignored. If B<type> is V_ASN1_BOOLEAN
-then the boolean is set to TRUE if B<value> is not NULL. If B<type> is
-V_ASN1_OBJECT then value is an ASN1_OBJECT structure. Otherwise B<type>
-is and ASN1_STRING structure. If B<type> corresponds to a primitive type
-(or a string type) then the contents of the ASN1_STRING contain the content
-octets of the type. If B<type> corresponds to a constructed type or
-a tagged type (V_ASN1_SEQUENCE, V_ASN1_SET or V_ASN1_OTHER) then the
-ASN1_STRING contains the entire ASN.1 encoding verbatim (including tag and
+The type and meaning of the I<value> parameter for ASN1_TYPE_set() and
+ASN1_TYPE_set1() is determined by the I<type> parameter.
+If I<type> is B<V_ASN1_NULL> I<value> is ignored. If I<type> is
+B<V_ASN1_BOOLEAN>
+then the boolean is set to TRUE if I<value> is not NULL. If I<type> is
+B<V_ASN1_OBJECT> then value is an B<ASN1_OBJECT> structure. Otherwise I<type>
+is and B<ASN1_STRING> structure. If I<type> corresponds to a primitive type
+(or a string type) then the contents of the B<ASN1_STRING> contain the content
+octets of the type. If I<type> corresponds to a constructed type or
+a tagged type (B<V_ASN1_SEQUENCE>, B<V_ASN1_SET> or B<V_ASN1_OTHER>) then the
+B<ASN1_STRING> contains the entire ASN.1 encoding verbatim (including tag and
 length octets).
 
 ASN1_TYPE_cmp() may not return zero if two types are equivalent but have
@@ -74,7 +75,7 @@ applications should handle the case of two absent values separately.
 
 =head1 RETURN VALUES
 
-ASN1_TYPE_get() returns the type of the ASN1_TYPE argument.
+ASN1_TYPE_get() returns the type of the B<ASN1_TYPE> argument.
 
 ASN1_TYPE_set() does not return a value.
 
@@ -85,7 +86,7 @@ ASN1_TYPE_cmp() returns 0 if the types are identical and non-zero otherwise.
 ASN1_TYPE_unpack_sequence() returns a pointer to an ASN.1 structure or
 NULL on failure.
 
-ASN1_TYPE_pack_sequence() return an ASN1_TYPE structure if it succeeds or
+ASN1_TYPE_pack_sequence() return an B<ASN1_TYPE> structure if it succeeds or
 NULL on failure.
 
 =head1 COPYRIGHT