I'm still getting to grips with render arrays and there similarity to FAPI arrays is a point of confusion. I'm customisingcustomizing a node form using hook_form_alterhook_form_alter
and I wanted to insert some custom markup in place of a field,.
I have inserted a table render array as a child of a the field FAPI container array and much to my suprisesurprise the table was rendered. What's going on here?
How do I know when a render array will be processed properly?