diff --git a/main/ma02_cfg.py b/main/ma02_cfg.py
index c745fed..61f5f47 100644
--- a/main/ma02_cfg.py
+++ b/main/ma02_cfg.py
@@ -51,6 +51,7 @@ Mod('mf',
     'frappy_psi.sea.SeaDrivable', '',
     io='sea_main',
     sea_object='mf',
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',
diff --git a/main/ma10_cfg.py b/main/ma10_cfg.py
index bab61ba..cfed014 100644
--- a/main/ma10_cfg.py
+++ b/main/ma10_cfg.py
@@ -46,6 +46,7 @@ Mod('mf',
     io='sea_main',
     sea_object='mf',
     rel_paths=['.', 'gen', 'ips'],
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',
diff --git a/main/ma10heat_cfg.py b/main/ma10heat_cfg.py
index e1cb2f4..4b71c8e 100644
--- a/main/ma10heat_cfg.py
+++ b/main/ma10heat_cfg.py
@@ -59,6 +59,7 @@ Mod('mf',
     'frappy_psi.sea.SeaDrivable', '',
     io='sea_main',
     sea_object='mf',
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',
diff --git a/main/ma10high_t_cfg.py b/main/ma10high_t_cfg.py
index 7a0b938..9526fba 100644
--- a/main/ma10high_t_cfg.py
+++ b/main/ma10high_t_cfg.py
@@ -71,6 +71,7 @@ Mod('mf',
     'frappy_psi.sea.SeaDrivable', '',
     io='sea_main',
     sea_object='mf',
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',
diff --git a/main/ma11_cfg.py b/main/ma11_cfg.py
index cbe38cd..62804ab 100644
--- a/main/ma11_cfg.py
+++ b/main/ma11_cfg.py
@@ -63,6 +63,7 @@ Mod('mf',
     'frappy_psi.sea.SeaDrivable', '',
     io='sea_main',
     sea_object='mf',
+    meaning=['magneticfield', 10],
 )
 
 Mod('tcoil',
diff --git a/main/ma15_cfg.py b/main/ma15_cfg.py
index 1b63405..9581e51 100644
--- a/main/ma15_cfg.py
+++ b/main/ma15_cfg.py
@@ -48,6 +48,7 @@ Mod('mf',
     'frappy_psi.sea.SeaDrivable', '',
     io = 'sea_main',
     sea_object = 'mf',
+    meaning=('magneticfield', 10),
 )
 Mod('lev',
     'frappy_psi.sea.SeaReadable', '',
diff --git a/main/ma6_cfg.py b/main/ma6_cfg.py
index 11ad023..864203d 100644
--- a/main/ma6_cfg.py
+++ b/main/ma6_cfg.py
@@ -57,6 +57,7 @@ Mod('mf',
     'frappy_psi.sea.SeaDrivable', '',
     io='sea_main',
     sea_object='mf',
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',
diff --git a/main/ma6_sampleheat_cfg.py b/main/ma6_sampleheat_cfg.py
index c48b911..b3e31c5 100644
--- a/main/ma6_sampleheat_cfg.py
+++ b/main/ma6_sampleheat_cfg.py
@@ -85,6 +85,7 @@ Mod('mf',
     'frappy_psi.sea.SeaDrivable', '',
     io='sea_main',
     sea_object='mf',
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',
diff --git a/main/ma7_cfg.py b/main/ma7_cfg.py
index bec34e5..f54bf65 100644
--- a/main/ma7_cfg.py
+++ b/main/ma7_cfg.py
@@ -59,6 +59,7 @@ Mod('mf',
     io='sea_main',
     sea_object='mf',
     value=Param(unit='T'),
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',
diff --git a/main/ma7_piezo_cfg.py b/main/ma7_piezo_cfg.py
index 09ec3fc..0caa8b4 100644
--- a/main/ma7_piezo_cfg.py
+++ b/main/ma7_piezo_cfg.py
@@ -59,6 +59,7 @@ Mod('mf',
     io='sea_main',
     sea_object='mf',
     value=Param(unit='T'),
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',
diff --git a/main/ma7_sampleheat_cfg.py b/main/ma7_sampleheat_cfg.py
index ef3fda2..060bec2 100644
--- a/main/ma7_sampleheat_cfg.py
+++ b/main/ma7_sampleheat_cfg.py
@@ -93,6 +93,7 @@ Mod('mf',
     'frappy_psi.sea.SeaDrivable', '',
     io='sea_main',
     sea_object='mf',
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',
diff --git a/main/ma7_thermalc_cfg.py b/main/ma7_thermalc_cfg.py
index d91b24c..75bc3be 100644
--- a/main/ma7_thermalc_cfg.py
+++ b/main/ma7_thermalc_cfg.py
@@ -88,6 +88,7 @@ Mod('mf',
     'frappy_psi.sea.SeaDrivable', '',
     io = 'sea_main',
     sea_object = 'mf',
+    meaning=('magneticfield', 10),
 )
 Mod('lev',
     'frappy_psi.sea.SeaReadable', '',
diff --git a/main/ma7two_cfg.py b/main/ma7two_cfg.py
index b53dce5..a44500d 100644
--- a/main/ma7two_cfg.py
+++ b/main/ma7two_cfg.py
@@ -63,6 +63,7 @@ Mod('mf',
     'frappy_psi.sea.SeaReadable', '',
     io='sea_main',
     sea_object='mf',
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',
diff --git a/main/mb11_cfg.py b/main/mb11_cfg.py
index 9d0ea4d..010f659 100644
--- a/main/mb11_cfg.py
+++ b/main/mb11_cfg.py
@@ -109,6 +109,7 @@ Mod('mf',
         max=11.0,
     ),
     persistent_limit=11.1,
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',
diff --git a/main/mb11std_cfg.py b/main/mb11std_cfg.py
index cc809f9..48a9f33 100644
--- a/main/mb11std_cfg.py
+++ b/main/mb11std_cfg.py
@@ -124,6 +124,7 @@ Mod('mf',
         max=11.0,
     ),
     persistent_limit=11.1,
+    meaning=('magneticfield', 10),
 )
 
 Mod('lev',