UIM
From MidrangeWiki
UIM or User Interface Manager is a language for defining display panels and panel groups.
It is conceptually similar to the Web Programming language HTML in that there are bodies of plain text surrounded by small amounts of coding inside some odd characters to control how that text is to be displayed, and sometimes it is only on a new line that there is a character or two with a special character to designate something about how to display the text that follows.
It is the language used to create help screens for BPCS.