Change the "dashboard" screen to popups

I realized that a DM Screen isn't really what I want. If I want
information about a particular rule or the magic school, then I want it
to pop up, and then go away.

rpgdm-custom.el

@@ -0,0 +1,41 @@
+;;; rpgdm-custom.el --- Customizations for RPGDM -*- lexical-binding: t; -*-
+;;
+;; Copyright (C) 2021 Howard X. Abrams
+;;
+;; Author: Howard X. Abrams <http://gitlab.com/howardabrams>
+;; Maintainer: Howard X. Abrams <howard.abrams@workday.com>
+;; Created: February 26, 2021
+;;
+;; This file is not part of GNU Emacs.
+;;
+;;
+;;; Code:
+
+(defgroup rpgdm nil
+  "Customization for the Dungeon Master support package."
+  :prefix "rpgdm-"
+  :group 'applications
+  :link '(url-link :tag "Github" "https://gitlab.com/howardabrams/emacs-rpgdm"))
+
+(defcustom rpgdm-screen-window-side :right
+  "Split new windows on a particular side.
+For instance, `:below' or on the `:right'."
+  :type '(choice (const :tag "above" 'above)
+                 (const :tag "below" 'below)
+                 (const :tag "left"  'left)
+                 (const :tag "right" 'right))
+  :group 'rpgdm)
+
+(defcustom rpgdm-screen-window-size nil
+  "The size of new windows. Leave nil for half the frame."
+  :type '(integer)
+  :group 'rpgdm)
+
+(defcustom rpgdm-screen-fullscreen nil
+  "Should the displayed screen occupy the entire frame?"
+  :type '(boolean)
+  :group 'rpgdm)
+
+
+(provide 'rpgdm-custom)
+;;; rpgdm-custom.el ends here