diff --git a/Customize-Translations.md b/Customize-Translations.md
index 48cd580..7cde92a 100644
--- a/Customize-Translations.md
+++ b/Customize-Translations.md
@@ -6,6 +6,12 @@ WeKan has default translations from English to other languages at https://explor
 
 With this feature, you can override some default translation string with custom string, your modified new version of translation text, with GUI at Admin Panel, and changes are immediately in use in WeKan.
 
+## To translators, about the word Custom
+
+Custom means something modified, that is not the default.
+For example, WeKan has other feature https://github.com/wekan/wekan/wiki/Custom-Fields ,
+where is added new custom fields, that are not default.
+
 ## Admin Panel / Translation
 
 - Language: https://github.com/wekan/wekan/blob/master/imports/i18n/languages.js