I am investigating in TR custom reports and I collected some questions.
1) Do you have any developer documentation for custom reports besides "Reports: Building a custom report plugin" article. I haven't found information related to a control schema, types of entries in it, for instance:
'type' => 'limits_select', what does "limits_select" means and what else can it be?
2) In prepare_form function:
'custom_types_include' => array(
'type' => 'bool',
'default' => false
What 'type' else can be? And do you have any documentation about types and how to use them?
3) Can I add a custom multiselect field to a form?