TinyMCE wysiwyg editor how to add Options and Hooking in with JavaScript

[Vodhin]

How do you add options for font size without editing the tinymce4/e107/plugin.js file? Specifically I want to activate "blocks", "fontfamily", and "fontsize" to the editor but I have not seen any way to add those to the $form->bbarea() function in form_handler.php.

There are more options available according to https://www.tiny.cloud/blog/custom-font-sizes-in-tinymce:

toolbar: "undo redo spellcheckdialog | blocks fontfamily fontsize | bold italic underline forecolor backcolor | link image | align lineheight checklist bullist numlist | indent outdent | removeformat typography"

fontsize_formats: "8pt 9pt 10pt 11pt 12pt 14pt 18pt 24pt 30pt 36pt 48pt 60pt 72pt 96pt"

I also want to hook into the form field with Ajax: I have a lot of elements that are all over the page (and in different tabs) that need this editor and I would like to send the data into a single WYSIWYG editor and save it via Ajax without losing my place on the page with a reload. I would normally do this by using JavaScript to build a form on the fly and post data via Ajax. I've tried using Ajax to add a new WYSIWYG editor with an HTML callback but it does not load tinyMCE. I have had some success using JavaScript to load an iframe with the WYSIWYG page, but that becomes ridiculous because the result is an iframe inside an iframe, which triggers a warning about unsaved changes (when there aren't any) if you reload the main page or click to go somewhere else.

I do have hope in attempting to hook into the JavaScript object "top.tinymce" for some data manipulation...

[tgtje]

@Vodhin tiny in use is to be seen as an 'community' development (afaik). The changes you suggest require a commercial version.
Hence often is talked about using an api-key. (without a valid API key, your editor will transition to read-only mode, limiting your ability to make changes).All i know.