Jeto Ideas

Given:
Jeto Rich Text input only outputs HTML
Jeto Single Line text ouputs plain text but input area is too small for multiple line Text Entry

When:
Users add paragraphs of texts, or bullet points, in their add to URL Paramters for calendar Event description (Using Agical).

I need to:

Either leverage rich text input fields and output a URL parameter compatible format (Plain Text or URL Encoded?)
Or perhaps allow user to enter multiple lines of text in the "Single Line" text field or a new "Plain Text" input field.