diff --git a/line.py b/line.py
index b8c1c99..8e8e5fd 100644
--- a/line.py
+++ b/line.py
@@ -112,18 +112,21 @@ class Line(SecondUomMixin, metaclass=PoolMeta):
         'on_change_with_diff_percent')
 
     trade_fee = fields.Function(fields.Numeric(string='Fee',
+        help='Trading fee for the current booking line.',
         readonly=True, digits=(16, Eval('currency_digits', 2)),
         states = {
             'invisible': Eval('feature', '') != 'asset',
         }, depends=['currency_digits', 'feature']),
         'get_yield_data', searcher='search_trade_fee')
     asset_dividend = fields.Function(fields.Numeric(string='Dividend',
+        help='Dividend received at the current booking line.',
         readonly=True, digits=(16, Eval('currency_digits', 2)),
         states = {
             'invisible': Eval('feature', '') != 'asset',
         }, depends=['currency_digits', 'feature']),
         'get_yield_data', searcher='search_asset_dividend')
     asset_gainloss = fields.Function(fields.Numeric(string='Profit/Loss',
+        help='Profit or loss on sale on the current booking line.',
         readonly=True, digits=(16, Eval('currency_digits', 2)),
         states = {
             'invisible': Eval('feature', '') != 'asset',
diff --git a/locale/de.po b/locale/de.po
index d23cc63..675b97f 100644
--- a/locale/de.po
+++ b/locale/de.po
@@ -266,14 +266,26 @@ msgctxt "field:cashbook.line,trade_fee:"
 msgid "Fee"
 msgstr "Gebühr"
 
+msgctxt "help:cashbook.line,trade_fee:"
+msgid "Trading fee for the current booking line."
+msgstr "Handelsgebühr für die aktuelle Buchungszeile."
+
 msgctxt "field:cashbook.line,asset_dividend:"
 msgid "Dividend"
 msgstr "Dividende"
 
+msgctxt "help:cashbook.line,asset_dividend:"
+msgid "Dividend received at the current booking line."
+msgstr "Erhaltene Dividende an der aktuellen Buchungszeile."
+
 msgctxt "field:cashbook.line,asset_gainloss:"
 msgid "Profit/Loss"
 msgstr "Gewinn/Verlust"
 
+msgctxt "help:cashbook.line,asset_gainloss:"
+msgid "Profit or loss on sale on the current booking line."
+msgstr "Gewinn oder Verlust bei Verkauf auf der aktuellen Buchungszeile."
+
 
 ##################
 # cashbook.recon #
diff --git a/view/line_form.xml b/view/line_form.xml
index 016a1e0..1386487 100644
--- a/view/line_form.xml
+++ b/view/line_form.xml
@@ -34,6 +34,7 @@ full copyright notices and license terms. -->
                 <field name="diff_percent" xexpand="0"/>
                 <label name="diff_percent" xalign="0.0" string="%" xexpand="1"/>
             </group>
+            <newline/>
 
             <label name="trade_fee"/>
             <field name="trade_fee"/>