When you create a relation with the <= operator, close the relation and run over its name in the list to view the floating display of relation components it displays = instead of <=. Small potatoes but could confuse someone.
On an unrelated topic, in developer when choosing a styleName there’s a nice dropdown. Choosing the tableName I usually end up opening Tools>Dataproviders to check the spelling of the table. Dropdown there would appeal to my inherent laziness.