iCalamus automatically outputs the content of text fields.
Nevertheless, some text fields are not updated automatically, e.g. the
text field 'Current date'.
Select the relevant text field (or even the whole text) and access
this menu item. This recalculates all the selected text fields'
content. Text layout may change significantly when the content becomes
longer or shorter (e.g. date text fields with full names for days or
months).
