diff --git a/templ_attr.cif b/templ_attr.cif
index 8c29dca..ca4804e 100644
--- a/templ_attr.cif
+++ b/templ_attr.cif
@@ -71,6 +71,43 @@ save_atom_site_id
      save_
 
 
+save_structure_id_key
+
+    _definition.update            2026-07-08
+    _description.text
+;
+     The structure to which this category relates.
+
+     If the data block defines a single value for _structure.id, or
+     _structure.id is missing and the data block contains a single
+     structure, this data name may be omitted.
+;
+    _name.linked_item_id          '_structure.id'
+    _type.purpose                 Link
+    _type.source                  Assigned
+    _type.container               Single
+    _type.contents                Word
+    save_
+
+
+save_structure_id_key_no_linked
+
+    _definition.update            2026-07-08
+    _description.text
+;
+     The structure to which this category relates.
+
+     If the data block defines a single value for _structure.id, or
+     _structure.id is missing and the data block contains a single
+     structure, this data name may be omitted.
+;
+    _type.purpose                 Link
+    _type.source                  Assigned
+    _type.container               Single
+    _type.contents                Word
+    save_
+
+
 save_rho_coeff
 
     _definition.update           2024-03-28
@@ -171,7 +208,7 @@ save_
 
 save_q_coeff_element
 
-    _description.text                   
+    _description.text
 ;
      Element of the matrix _atom_site_Fourier_wave_vector.q_coeff.
      Notation of the elements is identical to the one used in magCIF.
@@ -188,7 +225,7 @@ save_
 
 save_q_coeff_seq_id
 
-    _description.text                   
+    _description.text
 ;
      Element of the matrix _atom_site_Fourier_wave_vector.q_coeff_seq_id.
      Must match those given in _cell_wave_vector.seq_id.
@@ -206,7 +243,7 @@ save_
 save_site_ssg_symmetry
 
     _definition.update           2024-12-12
-    _description.text                   
+    _description.text
 ;
       The symmetry code of each atom site as the symmetry operation
       number 'n' and the higher-dimensional translation 'm1...mp'.
@@ -232,9 +269,9 @@ save_site_ssg_symmetry
     loop_
     _description_example.case
     _description_example.detail
-    .                    'no symmetry or translation to site'          
-    '4'                  '4th symmetry operation applied'    
-    '7_6455'              '7th symmetry position; +a on x, -b on y' 
+    .                    'no symmetry or translation to site'
+    '4'                  '4th symmetry operation applied'
+    '7_6455'              '7th symmetry position; +a on x, -b on y'
 
 save_
 
@@ -869,7 +906,7 @@ save_transf_matrix_id
     _description.text
 ;
       A numeric code identifying the transformation matrix that defines
-      the arbitrary axes a1, a2 and a3 in terms of the crystallographic axes. 
+      the arbitrary axes a1, a2 and a3 in terms of the crystallographic axes.
       This code must match _atom_sites_axes.matrix_seq_id.
 ;
     _name.linked_item_id         '_atom_sites_axes.matrix_seq_id'