— Function: minibufferp &optional buffer-or-name

This function returns non-nil if buffer-or-name is a minibuffer. If buffer-or-name is omitted, it tests the current buffer.

— Variable: minibuffer-setup-hook

This is a normal hook that is run whenever the minibuffer is entered. See Hooks.

— Variable: minibuffer-exit-hook

This is a normal hook that is run whenever the minibuffer is exited. See Hooks.

— Variable: minibuffer-help-form

The current value of this variable is used to rebind help-form locally inside the minibuffer (see Help Functions).

— Variable: minibuffer-scroll-window

If the value of this variable is non-nil, it should be a window object. When the function scroll-other-window is called in the minibuffer, it scrolls this window.

— Function: minibuffer-selected-window

This function returns the window which was selected when the minibuffer was entered. If selected window is not a minibuffer window, it returns nil.

— User Option: max-mini-window-height

This variable specifies the maximum height for resizing minibuffer windows. If a float, it specifies a fraction of the height of the frame. If an integer, it specifies a number of lines.

— Function: minibuffer-message string &rest args

This function displays string temporarily at the end of the minibuffer text, for two seconds, or until the next input event arrives, whichever comes first. If args is non-nil, the actual message is obtained by passing string and args through format. See Formatting Strings.